helen sawyer specifications 05/04 section 260519 - low...

HELEN SAWYER SPECIFICATIONS 05/04

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 1

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Copper building wire rated 600 V or less.

2. Connectors, splices, and terminations rated 600 V and less.

1.3 DEFINITIONS

A. PV: Photovoltaic.

B. RoHS: Restriction of Hazardous Substances.

C. VFC: Variable-frequency controller.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Product Schedule: Indicate type, use, location, and termination locations.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For manufacturer service representative.

B. Field quality-control reports.

1.6 QUALITY ASSURANCE

A. Testing Agency Qualifications: Member company of NETA.

1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing.

PART 2 - PRODUCTS

2.1 COPPER BUILDING WIRE



A. Description: Flexible, insulated and uninsulated, drawn copper current-carrying conductor with

an overall insulation layer or jacket, or both, rated 600 V or less.

B. Belden wire South Wire Okonite Alpha wire

or equivalent, UL approved

C. Standards:

1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for

intended location and use.

2. RoHS compliant.

3. Conductor and Cable Marking: Comply with wire and cable marking according to UL's

"Wire and Cable Marking and Application Guide."

D. Conductors: Copper, complying with ASTM B 3 for bare annealed copper and with ASTM B 8

for stranded conductors.

E. Conductor Insulation: 1. Type THHN and Type THWN-2: Comply with UL 83.

F. Shield:

1. N/A

2.2 ALUMINUM BUILDING WIRE

A. N/A

2.3 ARMORED CABLE, TYPE AC

A. N/A

2.4 PHOTOVOLTAIC CABLE, TYPE PV

A. N/A

2.5 MINERAL-INSULATED CABLE, TYPE MI

A. N/A

2.6 TRAY CABLE, TYPE TC

A. N/A

2.7 CONNECTORS AND SPLICES

A. Description: Factory-fabricated connectors, splices, and lugs of size, ampacity rating, material,

http://www.specagent.com/LookUp/?ulid=12724&mf=04&src=wd



type, and class for application and service indicated; listed and labeled as defined in NFPA 70,

by a qualified testing agency, and marked for intended location and use.

B. Amps, Belden, Molex

C. Jacketed Cable Connectors: For steel and aluminum jacketed cables, zinc die-cast with set

screws, designed to connect conductors specified in this Section. D. Lugs: One piece, seamless, designed to terminate conductors specified in this Section.

1. Material: Copper or Aluminum. 2. Type: One hole with standard barrels. 3. Termination: Compression or Crimp.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Stranded Copper.

B. Branch Circuits: Stranded Copper.

C. VFC Output Circuits Cable: N/A.

D. Power-Limited Fire Alarm and Control: N/A.

E. PV Circuits: N/A.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND

WIRING METHODS

A. Service Entrance: Type THHN/THWN-2.

B. Exposed Feeders: Type THHN/THWN-2.

C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN/THWN-2.

D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN/THWN-2.

E. Feeders Installed below Raised Flooring: Type THHN/THWN-2.

F. Feeders in Cable Tray: N/A

G. Exposed Branch Circuits, Including in Crawlspaces: Type THHN/THWN-2.

H. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN/THWN-2.

I. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN/THWN-2.

J. Branch Circuits Installed below Raised Flooring: Type THHN/THWN-2.




K. Branch Circuits in Cable Tray: N/A.

L. Cord Drops and Portable Appliance Connections: N/A.

M. VFC Output Circuits: N/A.

N. PV Circuits: N/A.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.

B. Complete raceway installation between conductor and cable termination points according to Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and

cables.

C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended

maximum pulling tensions and sidewall pressure values.

D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will

not damage cables or raceway.

E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members and

follow surface contours where possible.

F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque tightening values. If manufacturer's torque values are not indicated, use those specified in UL

486A-486B.

B. Make splices, terminations, and taps that are compatible with conductor material and that

possess equivalent or better mechanical strength and insulation ratings than unspliced

conductors.

1. Use oxide inhibitor in each splice, termination, and tap for aluminum conductors.

3.5 IDENTIFICATION

A. Identify and color-code conductors and cables according to Section 260553 "Identification for

Electrical Systems."

B. Identify each spare conductor at each end with identity number and location of other end of

conductor and identify as spare conductor.



3.6 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. 3.7 FIRESTOPPING

A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly.

3.8 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

B. Perform tests and inspections with the assistance of a factory-authorized service representative.

1. After installing conductors and cables and before electrical circuitry has been energized, test service entrance and feeder conductors for compliance with requirements.

2. After installing conductors and cables and before electrical circuitry has been energized, test service entrance and feeder conductors feeding the following critical equipment and services for compliance with requirements:

a. Service feeder from Florida Power and Light (FPL) to main 1600A ATS.

b. Feeder from new Generator to main 1600A ATS

c. Main feeder from main 1600A ATS to the new 1600A Distribution Switchboard

d. Service feeder from FPL to Fire Pump ATS/Controller

e. Feeder from Fire Pump ATS/Controller to Fire Pump motor

3. Perform each of the following visual and electrical tests:

a. Inspect exposed sections of conductor and cable for physical damage and correct

connection according to the single-line diagram. b. Test bolted connections for high resistance using one of the following:

1) A low-resistance ohmmeter.

2) Calibrated torque wrench.

3) Thermographic survey.

c. Inspect compression-applied connectors for correct cable match and indentation. d. Inspect for correct identification.

e. Inspect cable jacket and condition. f. Insulation-resistance test on each conductor for ground and adjacent conductors.

Apply a potential of 500-V dc for 300-V rated cable for a one-minute duration. g. Continuity test on each conductor and cable.

h. Uniform resistance of parallel conductors.

4. Initial Infrared Scanning: After Substantial Completion, but before Final Acceptance,



perform an infrared scan of each new splice in conductors No. 3 AWG and larger.

Remove box and equipment covers so splices are accessible to portable scanner. Correct

deficiencies determined during the scan.

a. Instrument: Use an infrared scanning device designed to measure temperature or to

detect significant deviations from normal values. Provide calibration record for

device.

b. Record of Infrared Scanning: Prepare a certified report that identifies switches

checked and that describes scanning results. Include notation of deficiencies

detected, remedial action taken, and observations after remedial action.

5. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each new switch 11 months after date of Substantial Completion.

C. Cables will be considered defective if they do not pass tests and inspections.

D. Prepare test and inspection reports to record the following:

1. Procedures used. 2. Results that comply with requirements. 3. Results that do not comply with requirements, and corrective action taken to achieve

compliance with requirements.

END OF SECTION 260519


GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526 - 1

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes grounding and bonding systems and equipment.

B. Section includes grounding and bonding systems and equipment, plus the following special applications:

1. Underground distribution grounding.


A. Product Data: For each type of product indicated.


A. Coordination Drawings: Plans showing dimensioned locations of grounding features specified in "Field Quality Control" Article, including the following: 1. Ground rods. 2. Ground rings.

B. Qualification Data: Generator manufacturer and supplier shall conduct all functional testing and

provide complete reports to the owner.

C. Field quality-control reports.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For grounding to include in emergency, operation, and

maintenance manuals. 1. In addition to items specified in Section 017823 "Operation and Maintenance Data,"

include the following:

a. Plans showing as-built, dimensioned locations of grounding features specified in "Field Quality Control" Article, including the following:



1) Ground rods. 2) Ground rings.

b. Instructions for periodic testing and inspection of grounding features at ground rods

and ground rings based on NFPA 70B.

1) Tests shall determine if ground-resistance or impedance values remain within specified maximums, and instructions shall recommend corrective action if values do not.

2) Include recommended testing intervals.


A. Testing Agency Qualifications: Generator manufacturer, Certified by NETA.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by

a qualified testing agency, and marked for intended location and application.

B. Comply with UL 467 for grounding and bonding materials and equipment.

2.2 MANUFACTURERS

A. Harger

B. Erico

C. Allied

2.3 CONDUCTORS

A. Insulated Conductors: Copper wire or cable insulated for 600 V unless otherwise required by

applicable Code or authorities having jurisdiction.

B. Bare copper or tinned copper conductors: Drawn, stranded 1. Solid Conductors: ASTM B 3. 2. Stranded Conductors: ASTM B 8. 3. Tinned Conductors: ASTM B 33. 4. Bonding Cable: 28 kcmil, 14 strands of No. 17 AWG conductor, 1/4 inch (6 mm) in

diameter.

5. Bonding Conductor: No. 4 or No. 6 AWG, stranded conductor. 6. Bonding Jumper: Copper tape, braided conductors terminated with copper ferrules; 1-5/8

inches (41 mm) wide and 1/16 inch (1.6 mm) thick.




7. Tinned Bonding Jumper: Tinned-copper tape, braided conductors terminated with copper ferrules; 1-5/8 inches (41 mm) wide and 1/16 inch (1.6 mm) thick.

C. Grounding Bus: Predrilled rectangular bars of annealed copper, 1/4 by 4 inches (6.3 by 100 mm) in cross section, with 9/32-inch (7.14-mm) holes spaced 1-1/8 inches (28 mm) apart. Stand-off insulators for mounting shall comply with UL 891 for use in switchboards, 600 V and shall be

Lexan or PVC, impulse tested at 5000 V.

2.4 CONNECTORS

A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications in which used and for specific types, sizes, and combinations of conductors and other items

connected.

B. Welded Connectors: Exothermic-welding kits of types recommended by kit manufacturer for

materials being joined and installation conditions.

C. Bus-Bar Connectors: Mechanical type, cast silicon bronze, solderless compression type wire terminals, and long-barrel, two-bolt connection to ground bus bar.

D. Bus-Bar Connectors: Compression type, copper or copper alloy, with two wire terminals.

E. Beam Clamps: Mechanical type, terminal, ground wire access from four directions, with dual,

tin-plated or silicon bronze bolts.

F. Cable-to-Cable Connectors: Compression type, copper or copper alloy.

G. Cable Tray Ground Clamp: Mechanical type, zinc-plated malleable iron.

H. Conduit Hubs: Mechanical type, terminal with threaded hub.

I. Ground Rod Clamps: Mechanical type, copper or copper alloy, terminal with hex head bolt or

socket set screw.

J. Ground Rod Clamps: Mechanical type, copper or copper alloy, terminal with hex head bolt.

K. Lay-in Lug Connector: Mechanical type, copper rated for direct burial terminal with set screw.

L. Service Post Connectors: Mechanical type, bronze alloy terminal, in short- and long-stud

lengths, capable of single and double conductor connections. M. Signal Reference Grid Clamp: Mechanical type, stamped-steel terminal with hex head screw.

N. Straps: Solid copper, copper lugs, Rated for 600 A.

O. Tower Ground Clamps: Mechanical type, copper or copper alloy, terminal one-piece clamp.

P. U-Bolt Clamps: Mechanical type, copper or copper alloy, terminal listed for direct burial.

Q. Water Pipe Clamps:

1. Mechanical type, two pieces with stainless-steel bolts.



a. Material: Die-cast zinc alloy.

b. Listed for direct burial.

2. U-bolt type with malleable-iron clamp and copper ground connector rated for direct

burial.

2.5 GROUNDING ELECTRODES

A. Ground Rods: Copper-clad steel, 5/8 by 120 inches.

B. Ground Plates: 1/4 inch (6 mm) thick, hot dip galvanized.

PART 3 - EXECUTION

3.1 APPLICATIONS

A. Conductors: Install stranded copper conductor unless otherwise indicated.

B. Underground Grounding Conductors: Install bare tinned copper conductor, No. 3/0 AWG minimum.

1. Bury at least 24 inches (600 mm) below grade.

C. Grounding Bus: Install in electrical equipment rooms, in rooms housing service equipment, and elsewhere as indicated.

1. Install bus horizontally, on insulated spacers 2 inches (50 mm) minimum from wall, 6

inches (150 mm) above finished floor unless otherwise indicated.

D. Conductor Terminations and Connections:

1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors. 2. Underground Connections: Welded connectors except at test wells and as otherwise

indicated. 3. Connections to Structural Steel: Welded connectors.

3.2 GROUNDING AT THE SERVICE

A. Equipment grounding conductors and grounding electrode conductors shall be connected to the

ground bus. Install a main bonding jumper between the neutral and ground buses.

3.3 EQUIPMENT GROUNDING

A. Install insulated equipment grounding conductors with all feeders and branch circuits.

B. Install insulated equipment grounding conductors with the following items, in addition to those

required by NFPA 70:



1. Feeders and branch circuits.

2. Lighting circuits.

3. Receptacle circuits.

4. Single-phase motor and appliance branch circuits.

5. Three-phase motor and appliance branch circuits.

6. Flexible raceway runs.

7. Busway Supply Circuits: Install insulated equipment grounding conductor from

grounding bus in the switchgear, switchboard, or distribution panel to equipment

grounding bar terminal on busway.

C. Metallic Fences: Comply with requirements of IEEE C2 and NEC 250.194.

1. Grounding Conductor: Bare, copper, not less than No. 8 AWG. 2. Gates: Shall be bonded to the grounding conductor with a flexible bonding jumper. 3. Barbed Wire: Strands shall be bonded to the grounding conductor.

3.4 INSTALLATION

A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwise indicated or required by Code. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage.

B. Ground Bonding Common with Lightning Protection System: Comply with NFPA 780 and UL 96 when interconnecting with lightning protection system. Bond electrical power system ground directly to lightning protection system grounding conductor at closest point to electrical service grounding electrode. Use bonding conductor sized same as system grounding electrode conductor and install in conduit.

C. Ground Rods: Drive rods until tops are 2 inches (50 mm) below finished floor or final grade

unless otherwise indicated.

1. Interconnect ground rods with grounding electrode conductor below grade and as otherwise indicated. Make connections without exposing steel or damaging coating if any.

2. Use exothermic welds for all below-grade connections. 3. For grounding electrode system, install at least two rods spaced at least 6 feet and located

at least the same distance from other grounding electrodes, and connect to the service grounding electrode conductor.

D. Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenance

except where routed through short lengths of conduit.

1. Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrate any adjacent parts.

2. Bonding to Equipment Mounted on Vibration Isolation Hangers and Supports: Install bonding so vibration is not transmitted to rigidly mounted equipment.

3. Use exothermic-welded connectors for outdoor locations; if a disconnect-type connection is required, use a bolted clamp.

E. Grounding and Bonding for Piping:



1. Metal Water Service Pipe: Install insulated copper grounding conductors, in conduit, from building's main service equipment, or grounding bus, to main metal water service entrances to building. Connect grounding conductors to main metal water service pipes; use a bolted clamp connector or bolt a lug-type connector to a pipe flange by using one of the lug bolts of the flange. Where a dielectric main water fitting

is installed, connect grounding conductor on street side of fitting. Bond metal grounding conductor conduit or sleeve to conductor at each end.

F. Ground Ring: Install a grounding conductor, electrically connected to each building structure

ground rod extending around the perimeter of building.

1. Install tinned-copper conductor not less than No. 3/0 AWG for ground ring and for taps to building steel.

2. Bury ground ring not less than 24 inches (600 mm) from building's foundation.

G. Connections: Make connections so possibility of galvanic action or electrolysis is minimized. Select

connectors, connection hardware, conductors, and connection methods so metals in direct contact

are galvanically compatible.

1. Use electroplated or hot-tin-coated materials to ensure high conductivity and to make contact points closer in order of galvanic series.

2. Make connections with clean, bare metal at points of contact. 3. Make aluminum-to-steel connections with stainless-steel separators and mechanical

clamps. 4. Make aluminum-to-galvanized-steel connections with tin-plated copper jumpers and

mechanical clamps. 5. Coat and seal connections having dissimilar metals with inert material to prevent future

penetration of moisture to contact surfaces.

FIELD QUALITY CONTROL



B. Tests and Inspections:

1. After installing grounding system but before permanent electrical circuits have been energized, test for compliance with requirements.

2. Inspect physical and mechanical condition. Verify tightness of accessible, bolted, electrical connections with a calibrated torque wrench according to manufacturer's written

instructions. 3. Test completed grounding system at each location where a maximum ground-resistance

level is specified, at service disconnect enclosure grounding terminal at individual ground rods. Make tests at ground rods before any conductors are connected.

a. Measure ground resistance no fewer than two full days after last trace of precipitation and without soil being moistened by any means other than natural

drainage or seepage and without chemical treatment or other artificial means of reducing natural ground resistance.

b. Perform tests by fall-of-potential method according to IEEE 81.



C. Grounding system will be considered defective if it does not pass tests and inspections. D. Prepare test and inspection reports.

E. Report measured ground resistances that exceed the following values:

1. Power and Lighting Equipment or System with Capacity of 500 kVA and Less: 5 ohms.

2. Power Distribution Units or Panelboards Serving Electronic Equipment: 3 ohm(s).

3. Substations and Pad-Mounted Equipment: 5 ohms.

F. Excessive Ground Resistance: If resistance to ground exceeds specified values, notify Engineer

promptly and include recommendations to reduce ground resistance.



HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529 - 1

SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY


1. Steel slotted support systems. 2. Aluminum slotted support systems. 3. Nonmetallic slotted support systems.

4. Conduit and cable support devices. 5. Support for conductors in vertical conduit. 6. Structural steel for fabricated supports and restraints. 7. Mounting, anchoring, and attachment components, including powder-actuated fasteners,

mechanical expansion anchors, concrete inserts, clamps, through bolts, toggle bolts, and hanger rods.

8. Fabricated metal equipment support assemblies.



1. Include construction details, material descriptions, dimensions of individual components

and profiles, and finishes for the following:

a. Slotted support systems, hardware, and accessories. b. Clamps. c. Hangers. d. Sockets. e. Eye nuts. f. Fasteners. g. Anchors.

h. Saddles. i. Brackets.

2. Include rated capacities and furnished specialties and accessories.

B. Shop Drawings: For fabrication and installation details for electrical hangers and support

systems.

1. Hangers. Include product data for components. 2. Slotted support systems.



3. Equipment supports. 4. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments

to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting.

C. Delegated-Design Submittal: For hangers and supports for electrical systems.

1. Include design calculations anddetails of hangers. 2. Include design calculations for seismic restraints.


A. Seismic Qualification Data: Certificates, for hangers and supports for electrical equipment and

systems, accessories, and components, from manufacturer.

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based

and their installation requirements. 4. Refer to manufacturer’s specification 263213.16 for more details

B. Welding certificates.


A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M. PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Delegated Design: Engage a qualified professional engineer, as defined in Section 014000

"Quality Requirements," to design hanger and support system.

B. Seismic Performance: Hangers and supports shall withstand the effects of earthquake motions determined according to ASCE/SEI 7

1. The term "withstand" means "the supported equipment and systems will remain in place without separation of any parts when subjected to the seismic forces specified and the supported equipment and systems will be fully operational after the seismic event."

2. Component Importance Factor: 1.5.

C. Surface-Burning Characteristics: Comply with ASTM E 84; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.



1. Flame Rating: Class 1. 2. Self-extinguishing according to ASTM D 635.

2.2 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Steel Slotted Support Systems: Preformed steel channels and angles with minimum 13/32-inch-

(10-mm-) diameter holes at a maximum of 8 inches (200 mm) o.c. in at least one surface.

1. Cooper Ind., Grainger, Power-Strut or approved equal. 2. Standard: Comply with MFMA-4 factory-fabricated components for field assembly. 3. Material for Channel, Fittings, and Accessories: Galvanized steel or Stainless steel, Type

304. 4. Channel Width: Selected for applicable load criteria 1-5/8 inches (41.25 mm), or 1-1/4

inches (31.75 mm) or 13/16 inches (20.64 mm) as needed. 5. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-

4. 6. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating

applied according to MFMA-4. 7. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-

4. 8. Protect finishes on exposed surfaces from damage by applying a strippable, temporary

protective covering before shipping.

B. Aluminum Slotted Support Systems: Extruded-aluminum channels and angles with minimum 13/32-inch- (10-mm-) diameter holes at a maximum of 8 inches (200 mm) o.c. in at least one surface.

1. Cooper Indus., Grainger, Power-Strut or approved equal. 2. Standard: Comply with MFMA-4 factory-fabricated components for field assembly.

3. Channel Material: 6063-T5 aluminum alloy. 4. Fittings and Accessories Material: 5052-H32 aluminum alloy. 5. Fittings and Accessories Material: 5052-H32 aluminum alloy. 6. Channel Width: Selected for applicable load criteria 1-5/8 inches (41.25 mm) or 1-1/4

inches (31.75 mm), 13/16 inches (20.64 mm). 7. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating

applied according to MFMA-4. 8. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-

4. 9. Protect finishes on exposed surfaces from damage by applying a strippable, temporary


C. Nonmetallic Slotted Support Systems: Structural-grade, factory-formed, glass-fiber-resin channels, and angles with minimum 13/32-inch- (10-mm-) diameter holes at a maximum of 8 inches (200 mm) o.c., in at least one surface.

1. Cooper Indus., Grainger, Power-Strut. 2. Standard: Comply with MFMA-4 factory-fabricated components for field assembly. 3. Channel Width: Selected for applicable load criteria 1-5/8 inches (41.25 mm) or 1-1/4

inches (31.75 mm), 13/16 inches (20.64 mm). 4. Fittings and Accessories: Products provided by channel and angle manufacturer and






designed for use with those items. 5. Fitting and Accessory Materials: Same as those for channels and angles. 6. Rated Strength: Selected to suit applicable load criteria. 7. Protect finishes on exposed surfaces from damage by applying a strippable, temporary


D. Conduit and Cable Support Devices: Galvanized steel hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported.

E. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for nonarmored electrical conductors or cables in

riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as required to suit individual conductors or cables supported. Body shall be made of malleable iron.

F. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M steel plates, shapes, and bars; black and galvanized.

G. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their

supports to building surfaces include the following:

1. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened Portland cement concrete, steel, or wood, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used.

2. Cooper Indus., Grainger, Power-Strut or approved equivalent. 3. Mechanical-Expansion Anchors: Insert-wedge-type, stainless steel, for use in hardened

Portland cement concrete, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used.

4. Cooper Indus., Grainger, Power-Strut or approved equivalent. 5. Concrete Inserts: Steel or malleable-iron, slotted support system units are similar to MSS

Type 18 units and comply with MFMA-4 or MSS SP-58. 6. Clamps for Attachment to Steel Structural Elements: MSS SP-58 units are suitable for

attached structural element. 7. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325. 8. Toggle Bolts: Stainless-steel springhead type. 9. Hanger Rods: Threaded steel.

2.3 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description: Welded or bolted structural-steel shapes, shop or field fabricated to fit dimensions

of supported equipment.

PART 3 - EXECUTION 3.1 APPLICATION

A. Comply with the following standards for application and installation requirements of hangers and supports, except where requirements on Drawings or in this Section are stricter:

1. NECA 1. 2. NECA 101 3. NECA 102.

4. NECA 105.

5. NECA 111.





B. Comply with requirements for raceways and boxes specified in Section 260533 "Raceways and

Boxes for Electrical Systems."

C. Maximum Support Spacing and Minimum Hanger Rod Size for Raceways: Space supports for

EMT, IMC, and RMC as required by NFPA 70. Minimum rod size shall be 1/4 inch (6 mm) in

diameter.

D. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted support

system, sized so capacity can be increased by at least 25 percent in future without exceeding

specified design load limits.

1. Secure raceways and cables to these supports with single-bolt conduit clamps.

E. Spring-steel clamps designed for supporting single conduits without bolts may be used for 11/2-

inch (38-mm) and smaller raceways serving branch circuits and communication systems above

suspended ceilings, and for fastening raceways to trapeze supports.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this

article.

B. Raceway Support Methods: In addition to methods described in NECA 1, EMT and RMC may

be supported by openings through structure members, according to NFPA 70.

C. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb (90 kg).

D. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten

electrical items and their supports to building structural elements by the following methods unless otherwise indicated by code:

1. To Wood: Fasten with lag screws or through bolts. 2. To New Concrete: Bolt to concrete inserts. 3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor

fasteners on solid masonry units.

4. To Existing Concrete: Expansion anchor fasteners. 5. Instead of expansion anchors, powder-actuated driven threaded studs provided with lock

washers and nuts may be used in existing standard-weight concrete 4 inches (100 mm) thick or greater. Do not use for anchorage to lightweight-aggregate concrete or for slabs less than 4 inches (100 mm) thick.

6. To Steel: Welded threaded studs complying with AWS D1.1/D1.1M, with lock washers

and nuts. 7. To Light Steel: Sheet metal screws. 8. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets,

panelboards, disconnect switches, control enclosures, pull and junction boxes, transformers, and other devices on slotted-channel racks attached to substrate by means that comply with seismic-restraint strength and anchorage requirements.



E. Drill holes for expansion anchors in concrete at locations and to depths that avoid the need for reinforcing bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation

to support and anchor electrical materials and equipment.

B. Field Welding: Comply with AWS D1.1/D1.1M.

3.4 CONCRETE BASES

A. Construct concrete bases of dimensions indicated, but not less than 4 inches (100 mm) larger in

both directions than supported unit, and so anchors will be a minimum of 10 bolt diameters from

edge of the base.

B. Use 3000-psi (20.7-MPa), 28-day compressive-strength concrete. Concrete materials, reinforcement, and placement requirements are specified in Section 033000 "Cast-in-Place Concrete”.

C. Anchor equipment to concrete base as follows:

1. Place and secure anchorage devices. Use supported equipment manufacturer's setting

drawings, templates, diagrams, instructions, and directions furnished with items to be

embedded.

2. Install anchor bolts to elevations required for proper attachment to supported equipment.

3. Install anchor bolts according to anchor-bolt manufacturer's written instructions.

3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately

after erecting hangers and supports. Use same materials as used for shop painting. Comply with

SSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils (0.05 mm).

B. Touchup: Comply with requirements in Section 099113 "Exterior Painting" and Section 099123

"Interior Painting" for cleaning and touchup painting of bolted connections, abraded areas of

shop paint on miscellaneous metal and field welds.

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780.



RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533 - 1

SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY


1. Metal conduits and fittings.

2. Nonmetallic conduits and fittings. 3. Metal wireways and auxiliary gutters. 4. Nonmetal wireways and auxiliary gutters. 5. Surface raceways.

6. Boxes, enclosures, and cabinets. 7. Handholes and boxes for exterior underground cabling.

1.3 DEFINITIONS

A. ARC: Aluminum rigid conduit.

B. GRC: Galvanized rigid steel conduit.

C. IMC: Intermediate metal conduit.


A. Product Data: For surface raceways, wireways and fittings, floor boxes, hinged-cover

enclosures, and cabinets.

B. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and

attachment details.


A. Coordination Drawings: Conduit routing plans, drawn to scale, on which the following items are

shown and coordinated with each other, using input from installers of items involved:

1. Structural members in paths of conduit groups with common supports.

2. HVAC and plumbing items and architectural features in paths of conduit groups with

common supports.

B. Qualification Data: For professional engineer.



C. Seismic Qualification Data: Certificates, for enclosures, cabinets, and conduit racks and their

mounting provisions, including those for internal components, from manufacturer.

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate

and describe mounting and anchorage provisions. 3. Detailed description of equipment anchorage devices on which the certification is based

and their installation requirements. 4. Detailed description of conduit support devices and interconnections on which the

certification is based and their installation requirements.

D. Source quality-control reports.

PART 2 - PRODUCTS

2.1 METAL CONDUITS AND FITTINGS

A. Metal Conduit:

1. Ecmweb, Granger, Eaststeelpipe, electrical-conduitfittings or approved equal. 2. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing

agency, and marked for intended location and application. 3. GRC: Comply with ANSI C80.1 and UL 6.

a. Comply with NEMA RN 1. b. Coating Thickness: 0.040 inch (1 mm), minimum.

4. EMT: Comply with ANSI C80.3 and UL 797.

B. Metal Fittings:

1. Ecmweb, Granger, Eaststeelpipe, electrical-conduitfittings or approved equal.

2. Comply with NEMA FB 1 and UL 514B. 3. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing

agency, and marked for intended location and application. 4. Fittings, General: Listed and labeled for type of conduit, location, and use. 5. Fittings for EMT:

a. Material: Steel b. Type: Setscrew or compression.

6. Expansion Fittings: PVC or steel to match conduit type, complying with UL 651, rated for

environmental conditions where installed, and including flexible external bonding jumper.

7. Coating for Fittings for PVC-Coated Conduit: Minimum thickness of 0.040 inch (1 mm),

with overlapping sleeves protecting threaded joints.

C. Joint Compound for IMC, GRC, or ARC: Approved, as defined in NFPA 70, by authorities

having jurisdiction for use in conduit assemblies, and compounded for use to lubricate and

protect threaded conduit joints from corrosion and to enhance their conductivity.





2.2 NONMETALLIC CONDUITS AND FITTINGS

A. Nonmetallic Conduit:

1. Ecmweb, Granger, Ganauria, Oncps, or approved equal.

2. Listing and Labeling: Nonmetallic conduit shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

3. Fiberglass:

a. Comply with NEMA TC 14. b. Comply with UL 2515 for aboveground raceways. c. Comply with UL 2420 for belowground raceways.

4. ENT: Comply with NEMA TC 13 and UL 1653.

5. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise

indicated.

6. LFNC: Comply with UL 1660.

7. Rigid HDPE: Comply with UL 651A.

8. Continuous HDPE: Comply with UL 651A.

B. Nonmetallic Fittings:

1. Ecmweb, Granger, Ganauria, Oncps, or approved equal.

2. Fittings, General: Listed and labeled for type of conduit, location, and use.

3. Fittings for ENT and RNC: Comply with NEMA TC 3; match toconduit or tubing type

and material.

a. Fittings for LFNC: Comply with UL 514B.

4. Solvents and Adhesives: As recommended by conduit manufacturer.

2.3 METAL WIREWAYS AND AUXILIARY GUTTERS

A. Csemag, Cooper Industries, Cesco or approved equal.

B. Description: Sheet metal, complying with UL 870 and NEMA 250, as needed Type 1, Type 3R,

Type 4, or Type 12 unless otherwise indicated, and sized according to NFPA 70.

1. Metal wireways installed outdoors shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

C. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings to match and mate with wireways as required for

complete system.

D. Wireway Covers: As per environment needs Hinged type, Screw-cover type, Flanged-and-

gasketed type unless otherwise indicated.

E. Finish: Manufacturer's standard enamel finish.






2.4 NONMETALLIC WIREWAYS AND AUXILIARY GUTTERS

A. Csemag, Cooper Industries, Cesco or approved equal.

B. Listing and Labeling: Nonmetallic wireways and auxiliary gutters shall be listed and labeled as

defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

C. Description: Fiberglass polyester, extruded and fabricated to required size and shape, without holes or knockouts. Cover shall be gasketed with oil-resistant gasket material and fastened with captive screws treated for corrosion resistance. Connections shall be flanged and have stainless- steel screws and oil-resistant gaskets.

D. Description: PVC, extruded and fabricated to required size and shape, and having snap-on cover,

mechanically coupled connections, and plastic fasteners.

E. Fittings and Accessories: Couplings, offsets, elbows, expansion joints, adapters, hold-down

straps, end caps, and other fittings shall match and mate with wireways as required for complete

system.

F. Solvents and Adhesives: As recommended by conduit manufacturer.

2.5 SURFACE RACEWAYS

A. Listing and Labeling: Surface raceways and tele-power poles shall be listed and labeled as

defined in NFPA 70, by a qualified testing agency, and marked for intended location and

application.

B. Surface Nonmetallic Raceways: Two- or three-piece construction, complying with UL 5A, and manufactured of rigid PVC with texture and color selected by Architect from manufacturer's

standard colors. Product shall comply with UL 94 V-0 requirements for self-extinguishing characteristics.

1. Csemag, Cooper industries, Cesco or approved equal.

2.6 BOXES, ENCLOSURES, AND CABINETS

A. Allied Elec., United Electric, Schneider Elec., or approved equal.

B. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets

installed in wet locations shall be listed for use in wet locations.

C. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A.

D. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy or aluminum,

Type FD, with gasketed cover.

E. Nonmetallic Outlet and Device Boxes: Comply with NEMA OS 2 and UL 514C.






F. Metal Floor Boxes:

1. Material: Cast metal.

2. Type: Fully adjustable.

3. Shape: Rectangular.

4. Listing and Labeling: Metal floor boxes shall be listed and labeled as defined in NFPA 70,

by a qualified testing agency, and marked for intended location and application.

G. Nonmetallic Floor Boxes: Nonadjustable, rectangular.

1. Listing and Labeling: Nonmetallic floor boxes shall be listed and labeled as defined in

NFPA 70, by a qualified testing agency, and marked for intended location and application.

H. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1.

I. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, cast

aluminum or galvanized, cast iron with gasketed cover.

J. Box extensions used to accommodate new building finishes shall be of same material as

recessed box.

K. Device Box Dimensions: 4 inches square by 2-1/8 inches deep (100 mm square by 60 mm

deep)] 4 inches by 2-1/8 inches by 2-1/8 inches deep (100 mm by 60 mm by 60 mm deep)

L. Gangable boxes are allowed.

M. Hinged-Cover Enclosures: Comply with UL 50 and NEMA 250, Type 1, Type 3R, Type 4 or

Type 12 as needed with continuous-hinge cover with flush latch unless otherwise indicated.

1. Metal Enclosures: Steel, finished inside and out with manufacturer's standard enamel.

2. Nonmetallic Enclosures: Plastic.

3. Interior Panels: Steel; all sides finished with manufacturer's standard enamel.

N. Cabinets:

1. NEMA 250, Type 1, Type 3R, or Type 12 as needed galvanized-steel box with removable

interior panel and removable front, finished inside and out with manufacturer's standard enamel.

2. Hinged door in front cover with flush latch and concealed hinge. 3. Key latch to match panelboards. 4. Metal barriers to separate wiring of different systems and voltage. 5. Accessory feet where required for freestanding equipment.

6. Nonmetallic cabinets shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2.7 HANDHOLES AND BOXES FOR EXTERIOR UNDERGROUND WIRING

A. General Requirements for Handholes and Boxes:

1. Boxes and handholes for use in underground systems shall be designed and identified as



defined in NFPA 70, for intended location and application. 2. Boxes installed in wet areas shall be listed and labeled as defined in NFPA 70, by a

qualified testing agency, and marked for intended location and application.

B. Polymer-Concrete Handholes and Boxes with Polymer-Concrete Cover: Molded of sand and aggregate, bound together with polymer resin, and reinforced with steel, fiberglass, or a

combination of the two.

1. Schneider, Hubbell, Grybar or approved equal.

2. Standard: Comply with SCTE 77.

3. Configuration: Designed for flush burial with open or closed bottom unless otherwise

indicated.

4. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural

load rating consistent with enclosure and handhole location.

5. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.

6. Cover Legend: Molded lettering, "ELECTRIC.".

7. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts

for secure, fixed installation in enclosure wall.

8. Handholes 12 Inches Wide by 24 Inches Long (300 mm Wide by 600 mm Long) or as

needed and Larger: Have inserts for cable racks and pulling-in irons installed before

concrete is poured.

C. Fiberglass Handholes and Boxes: Molded of fiberglass-reinforced polyester resin, with frame and covers of polymer concrete, cast iron or fiberglass as needed.

1. Schneider, Hubbell, Grybar or approved equal.

2. Standard: Comply with SCTE 77.

3. Color of Frame and Cover: Gray.

4. Configuration: Designed for flush burial with open or closed bottom unless otherwise

indicated.

5. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural

load rating consistent with enclosure and handhole location.

6. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.

7. Cover Legend: Molded lettering, "ELECTRIC.".

8. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts

for secure, fixed installation in enclosure wall.

9. Handholes 12 Inches Wide by 24 Inches Long (300 mm Wide by 600 mm Long) and

Larger: Have inserts for cable racks and pulling-in irons installed before concrete is

poured.

2.8 SOURCE QUALITY CONTROL FOR UNDERGROUND ENCLOSURES

A. Handhole and Pull-Box Prototype Test: Test prototypes of handholes and boxes for compliance with SCTE 77. Strength tests shall be for specified tier ratings of products supplied. Manufacturer or supplier shall provide testing data of products used, certifications shall comply with ISO 9000 and ISO 10012 and traceable to NIST standards.

PART 3 - EXECUTION





3.1 RACEWAY APPLICATION

A. Outdoors: Apply raceway products as specified below unless otherwise indicated:

1. Exposed Conduit: GRC.

2. Concealed Conduit, Aboveground: GRC, EMT, RNC, Type EPC-40-PVC.

3. Underground Conduit: RNC, Type EPC-40-PVC, Type EPC-80-PVC, direct buried,

concrete encased.

4. Boxes and Enclosures, Aboveground: NEMA 250, Type 3R, Type 4.

B. Indoors: Apply raceway products as specified below unless otherwise indicated:

1. Exposed, Not Subject to Physical Damage: EMT, RMC.

2. Exposed, Not Subject to Severe Physical Damage: EMT.

3. Exposed and Subject to Severe Physical Damage: GRC. Raceway locations include the

following:

a. Loading dock. b. Corridors used for traffic of mechanized carts, forklifts, and pallet-handling units.

c. Mechanical rooms. d. Generator Room, Electrical Room.

4. Concealed in Ceilings and Interior Walls and Partitions: EMT. 5. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic,

Electric Solenoid, or Motor-Driven Equipment): FMC, except use LFMC in damp or wet locations.

6. Damp or Wet Locations: GRC. 7. Boxes and Enclosures: NEMA 250, Type 1, except use NEMA 250, Type 4 stainless steel

in damp or wet locations.

C. Minimum Raceway Size: 3/4-inch (21-mm) trade size.

D. Raceway Fittings: Compatible with raceways and suitable for use and location.

1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless

otherwise indicated. Comply with NEMA FB 2.10. 2. PVC Externally Coated, Rigid Steel Conduits: Use only fittings listed for use with this

type of conduit. Patch and seal all joints, nicks, and scrapes in PVC coating after installing conduits and fittings. Use sealant recommended by fitting manufacturer and apply in thickness and number of coats recommended by manufacturer.

3. EMT: Use setscrew or compression, steel fittings. Comply with NEMA FB 2.10.

4. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with NEMA FB 2.20.

E. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth.

F. Install surface raceways only where indicated on Drawings.

G. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F (49 deg C).



3.2 INSTALLATION

A. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports.

B. Comply with NECA 1 and NECA 101 for installation requirements except where requirements on Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits. Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and

number of floors.

C. Do not install raceways or electrical items on any "explosion-relief" walls or rotating equipment.

D. Do not fasten conduits onto the bottom side of a metal deck roof.

E. Keep raceways at least 6 inches (150 mm) away from parallel runs of flues and steam or hot-

water pipes. Install horizontal raceway runs above water and steam piping.

F. Complete raceway installation before starting conductor installation.

G. Arrange stub-ups so curved portions of bends are not visible above finished slab.

H. Install no more than the equivalent of three 90-degree bends in any conduit run except for

control wiring conduits, for which fewer bends are allowed. Support within 12 inches (300 mm) of changes in direction.

I. Make bends in raceway using large-radius preformed ells. Field bending shall be according to NFPA 70 minimum radii requirements. Use only equipment specifically designed for material and size involved.

J. Conceal conduit within finished walls, ceilings, and floors unless otherwise indicated. Install conduits parallel or perpendicular to building lines.

K. Support conduit within 12 inches (300 mm) of enclosures to which attached.

L. Raceways Embedded in Slabs:

1. Run conduit larger than 1-inch (27-mm) trade size, parallel or at right angles to main

reinforcement. Where at right angles to reinforcement, place conduit close to slab support.

Secure raceways to reinforcement at maximum 10-foot (3-m) intervals.

2. Arrange raceways to cross building expansion joints at right angles with expansion fittings.

3. Arrange raceways to keep a minimum of 1 inch (25 mm)] [2 inches (50 mm) of concrete

cover in all directions.

4. Do not embed threadless fittings in concrete unless specifically approved by the Engineer for

each specific location.

5. Change from ENT to GRC before rising above floor.

M. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply listed compound to threads of raceway and fittings before making up joints. Follow compound manufacturer's written instructions.

N. Coat field-cut threads on PVC-coated raceway with a corrosion-preventing conductive



compound prior to assembly.

O. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings to protect conductors including conductors smaller than No. 4 AWG.

P. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes

or cabinets. Install bushings on conduits up to 1-1/4-inch (35mm) trade size and insulated throat metal bushings on 1-1/2-inch (41-mm) trade size and larger conduits terminated with locknuts. Install insulated throat metal grounding bushings on service conduits.

Q. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install locknuts hand tight plus 1/4 turn more.

R. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in the locknut area prior to assembling conduit to enclosure to assure a continuous ground path.

S. Cut conduit perpendicular to the length. For conduits 2-inch (53-mm) trade size and larger, use roll cutter or a guide to make cut straight and perpendicular to the length.

T. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not

less than 200-lb (90-kg) tensile strength. Leave at least 12 inches (300 mm) of slack at each end of pull wire. Cap underground raceways designated as spare above grade alongside raceways in use.

U. Surface Raceways:

1. Install surface raceway with a minimum 2-inch (50-mm) radius control at bend points.

2. Secure surface raceway with screws or other anchor-type devices at intervals not exceeding

48 inches (1200 mm) and with no less than two supports per straight raceway section.

Support surface raceway according to manufacturer's written instructions. Tape and glue are

not acceptable support methods.

V. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with

listed sealing compound. For concealed raceways, install each fitting in a flush steel box with a blank cover plate having a finish similar to that of adjacent plates or surfaces. Install raceway sealing fittings according to NFPA 70.

W. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or boxes are between the seal and the following changes of environments. Seal the interior of all

raceways at the following points:

1. Where conduits pass from warm to cold locations, such as boundaries of refrigerated spaces.

2. Where an underground service raceway enters a building or structure.

3. Conduit extending from interior to exterior of building.

4. Conduit extending into pressurized duct and equipment.

5. Conduit extending into pressurized zones that are automatically controlled to maintain

different pressure set points.

6. Where otherwise required by NFPA 70.

X. Comply with manufacturer's written instructions for solvent welding RNC and fittings.



Y. Expansion-Joint Fittings:

1. Install in each run of aboveground RNC that is located where environmental temperature change may exceed 30 deg F (17 deg C) and that has straight-run length that exceeds 25 feet (7.6 m). Install in each run of aboveground RMC and EMT conduit that is located where

environmental temperature change may exceed 100 deg F (55 deg C) and that has straight-run length that exceeds 100 feet (30 m).

2. Install type and quantity of fittings that accommodate temperature change listed for each of the following locations:

a. Outdoor Locations Not Exposed to Direct Sunlight: 125 deg F (70 deg C) temperature change.

b. Outdoor Locations Exposed to Direct Sunlight: 155 deg F (86 deg C) temperature change.

c. Indoor Spaces Connected with Outdoors without Physical Separation: 125 deg F (70 deg C) temperature change.

3. Install fitting(s) that provide expansion and contraction for at least 0.00041 inch per foot

of length of straight run per deg F (0.06 mm per meter of length of straight run per deg C) of temperature change for PVC conduits. Install fitting(s) that provide expansion and contraction for at least 0.000078 inch per foot of length of straight run per deg F (0.0115 mm per meter of length of straight run per deg C) of temperature change for metal conduits.

4. Install expansion fittings at all locations where conduits cross building or structure

expansion joints. 5. Install each expansion-joint fitting with position, mounting, and piston setting selected

according to manufacturer's written instructions for conditions at specific location at time

of installation. Install conduit supports to allow for expansion movement.

Z. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 36 inches (915 mm) 72 inches (1830 mm) of flexible conduit for recessed and semi-recessed luminaires, equipment subject to vibration, noise transmission, or movement and motors.

1. Use LFMC in damp or wet locations subject to severe physical damage. 2. Use LFMC or LFNC in damp or wet locations not subject to severe physical damage.

AA. Mount boxes at heights indicated on Drawings. If mounting heights of boxes are not individually indicated, give priority to ADA requirements. Install boxes with height measured to top of box unless otherwise indicated.

BB. Recessed Boxes in Masonry Walls: Saw-cut opening for box in center of cell of masonry block

and install box flush with surface of wall. Prepare block surfaces to provide a flat surface for a raintight connection between box and cover plate or supported equipment and box.

CC. Horizontally separate boxes mounted on opposite sides of walls, so they are not in the same vertical channel.

DD. Locate boxes so that cover or plate will not span different building finishes.

EE. Support boxes of three gangs or more from more than one side by spanning two framing members or mounting on brackets specifically designed for the purpose.



FF. Fasten junction and pull boxes to or support from building structure. Do not support boxes by conduits.

GG. Set metal floor boxes level and flush with finished floor surface.

HH. Set nonmetallic floor boxes level. Trim after installation to fit flush with finished floor surface.

3.3 INSTALLATION OF UNDERGROUND CONDUIT

A. Direct-Buried Conduit:

1. Excavate trench bottom to provide firm and uniform support for conduit. Prepare trench

bottom as specified in Section 312000 "Earth Moving" for pipe less than 6 inches (150 mm) in nominal diameter.

2. Install backfill as specified in Section 312000 "Earth Moving." 3. After installing conduit, backfill and compact. Start at tie-in point, and work toward end

of conduit run, leaving conduit at end of run free to move with expansion and contraction as temperature changes during this process. Firmly hand tamp backfill around conduit to

provide maximum supporting strength. After placing controlled backfill to within 12 inches (300 mm) of finished grade, make final conduit connection at end of run and complete backfilling with normal compaction as specified in Section 312000 "Earth Moving."

4. Install manufactured duct elbows for stub-ups at poles and equipment and at building entrances through floor unless otherwise indicated. Encase elbows for stub-up ducts

throughout length of elbow. 5. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment and at

building entrances through floor.

a. Couple steel conduits to ducts with adapters designed for this purpose and encase coupling with 3 inches (75 mm) of concrete for a minimum of 12 inches (300 mm) on each side of the coupling.

b. For stub-ups at equipment mounted on outdoor concrete bases and where conduits penetrate building foundations, extend steel conduit horizontally a minimum of 60 inches (1500 mm) from edge of foundation or equipment base. Install insulated

grounding bushings on terminations at equipment.

6. Warning Planks: Bury warning planks approximately 12 inches (300 mm) above direct-

buried conduits but a minimum of 6 inches (150 mm) below grade. Align planks along

centerline of conduit.

7. Underground Warning Tape: Comply with requirements in Section 260553 "Identification

for Electrical Systems."

3.4 INSTALLATION OF UNDERGROUND HANDHOLES AND BOXES

A. Install handholes and boxes level and plumb and with orientation and depth coordinated with

connecting conduits to minimize bends and deflections required for proper entrances.

B. Unless otherwise indicated, support units on a level bed of crushed stone or gravel, graded from 1/2-inch (12.5-mm) sieve to No. 4 (4.75-mm) sieve and compacted to same density as adjacent

undisturbed earth.



C. Elevation: In paved areas, set so cover surface will be flushed with finished grade. Set covers of

other enclosures 1 inch (25 mm) above finished grade.

D. Install handholes with bottom below frost line, min. 36” or as need below grade.

E. Install removable hardware, including pulling eyes, cable stanchions, cable arms, and insulators, as required for installation and support of cables and conductors and as indicated. Select arm lengths to be long enough to provide spare space for future cables but short enough to preserve adequate working clearances in enclosure.

F. Field-cut openings for conduits according to enclosure manufacturer's written instructions. Cut

wall of enclosure with a tool designed for material to be cut. Size holes for terminating fittings to be used, and seal around penetrations after fittings are installed.

3.5 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies.

3.6 FIRESTOPPING

A. Install firestopping at penetrations of fire-rated floor and wall assemblies.

3.7 PROTECTION

A. Protect coatings, finishes, and cabinets from damage and deterioration.

1. Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer.

2. Repair damage to PVC coatings or paint finishes with matching touchup coating

recommended by manufacturer.



IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553 - 1

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY


1. Color and legend requirements for raceways, conductors, and warning labels and signs.

2. Labels. 3. Bands and tubes. 4. Tapes and stencils. 5. Tags.

6. Signs. 7. Cable ties. 8. Paint for identification. 9. Fasteners for labels and signs.



1. Include construction details, material descriptions, dimensions of individual components

and profiles, and finishes for electrical identification products.

B. Samples: For each type of label and sign to illustrate composition, size, colors, lettering style,

mounting provisions, and graphic features of identification products.

C. Identification Schedule: For each piece of electrical equipment and electrical system components

to be an index of nomenclature for electrical equipment and system components used in

identification signs and labels. Use same designations indicated on Drawings.

PART 2 - PRODUCTS


A. Comply with ASME A13.1 and IEEE C2.

B. Comply with NFPA 70.



C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.

D. Comply with ANSI Z535.4 for safety signs and labels.

E. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inks

used by label printers, shall comply with UL 969.

F. Thermal Movements: Allow for thermal movements from ambient and surface temperature

changes.

1. Temperature Change: 120 deg F (67 deg C), ambient; 180 deg F (100 deg C), material

surfaces.

2.2 COLOR AND LEGEND REQUIREMENTS

A. Raceways and Cables Carrying Circuits at 600 V or Less:

1. Black letters on an orange field

2. Legend: Indicate voltage and system or service type.

B. Color-Coding for Phase- and Voltage-Level Identification, 600 V or Less: Use colors listed

below for ungrounded service, feeder, and branch-circuit conductors.

1. Color shall be factory applied or field applied for sizes larger than No. 8 AWG if authorities having jurisdiction permit.

2. Colors for 208/120-V Circuits:

a. Phase A: Black. b. Phase B: Red. c. Phase C: Blue.

3. Color for Neutral: White or gray. 4. Color for Equipment Grounds: Bare copper, Green, Green with a yellow stripe. 5. Colors for Isolated Grounds: Green with white stripe.

C. Warning Label Colors:

1. Identify system voltage with black letters on an orange background.

D. Warning labels and signs shall include, but are not limited to, the following legends:

1. Multiple Power Source Warning: "DANGER - ELECTRICAL SHOCK HAZARD - EQUIPMENT HAS MULTIPLE POWER SOURCES."

2. Workspace Clearance Warning: "WARNING - OSHA REGULATION - AREA IN FRONT OF ELECTRICAL EQUIPMENT MUST BE KEPT CLEAR FOR MIN. 36

INCHES (915 MM)."

3. Provide Label for new ATS: “DANGER - MAIN ELECTRICAL SERVICE

DISCONNECT”.

E. Equipment Identification Labels:



1. Black letters on a white field.

2.3 LABELS

A. Vinyl Wraparound Labels: Preprinted, flexible labels laminated with a clear, weather- and

chemical-resistant coating and matching wraparound clear adhesive tape for securing label ends.

1. Seton, Brady, Panduit or approved equal.

B. Snap-around Labels: Slit, pretensioned, flexible, preprinted, color-coded acrylic sleeves, with

diameters sized to suit diameters and that stay in place by gripping action.


C. Self-Adhesive Wraparound Labels: Preprinted, 3-mil- (0.08-mm-) thick, polyester or vinyl

flexible label with acrylic pressure-sensitive adhesive.


2. Self-Lamination: Clear; UV-, weather- and chemical-resistant; self-laminating, protective

shield over the legend. Labels sized such that the clear shield overlaps the entire printed

legend.

3. Marker for Labels: Permanent, waterproof, black ink marker recommended by tag

manufacturer.

4. Marker for Labels: Machine-printed, permanent, waterproof, black ink recommended by

printer manufacturer.

D. Self-Adhesive Labels: Polyester or Vinyl, thermal, transfer-printed, 3-mil- (0.08-mm-) thick,

multicolor, weather- and UV-resistant, pressure-sensitive adhesive labels, configured for

intended use and location.

1. Seton, Brady, Panduit or approved equal. 2. Minimum Nominal Size:

a. 1-1/2 by 6 inches (37 by 150 mm) for raceway and conductors. b. 3-1/2 by 5 inches (76 by 127 mm) for equipment. c. As required by authorities having jurisdiction.

2.4 BANDS AND TUBES

A. Snap-around, Color-Coding Bands: Slit, pretensioned, flexible, solid-colored acrylic sleeves, 2 inches (50 mm) long, with diameters sized to suit diameters and that stay in place by gripping action.


2.5 TAPES AND STENCILS

A. Marker Tapes: Vinyl or vinyl-cloth, self-adhesive wraparound type, with circuit identification

legend machine printed by thermal transfer or equivalent process.








1. Belden, Seton, Brady, Panduit or approved equal.

B. Self-Adhesive Vinyl Tape: Colored, heavy duty, waterproof, fade resistant; not less than 3 mils (0.08 mm) thick by 1 to 2 inches (25 to 50 mm) wide; compounded for outdoor use.


C. Tape and Stencil: 4-inch- (100-mm-) wide black stripes on 10-inch (250-mm) centers placed diagonally over orange background and are 12 inches (300 mm) wide. Stop stripes at legends.


D. Floor Marking Tape: 2-inch- (50-mm-) wide, 5-mil (0.125-mm) pressure-sensitive vinyl tape,

with yellow and black stripes and clear vinyl overlay.


E. Underground-Line Warning Tape:


2. Tape:

a. Recommended by manufacturer for the method of installation and suitable to

identify and locate underground electrical utility lines.

b. Printing on tape shall be permanent and shall not be damaged by burial operations.

c. Tape material and ink shall be chemically inert and not subject to degradation when

exposed to acids, alkalis, and other destructive substances commonly found in soils.

3. Color and Printing:

a. Comply with ANSI Z535.1, ANSI Z535.2, ANSI Z535.3, ANSI Z535.4, and ANSI

Z535.5.

b. Inscriptions for Red-Colored Tapes: "ELECTRIC SERVICE LINE"

4. Tag: Type I service

a. Pigmented polyolefin, bright colored, continuous-printed on one side with the inscription of the utility, compounded for direct-burial service.

b. Width: 3 inches (75 mm).

c. Thickness: 4 mils (0.1 mm). d. Weight: 18.5 lb/1000 sq. ft. (9.0 kg/100 sq. m). e. Tensile according to ASTM D 882: 30 lbf (133.4 N) and 2500 psi (17.2 MPa).

2.6 TAGS

A. Nonmetallic Preprinted Tags: Polyethylene tags, 0.015 inch (0.38 mm), 0.023 inch (0.58 mm)

thick, color-coded for phase and voltage level, with factory screened or printed permanent

designations; punched for use with self-locking cable tie fastener.

1. Belden, Seton, Brady, Panduit or approved equivalent.









2.7 SIGNS

A. Baked-Enamel Signs:


2. Preprinted aluminum signs, high-intensity reflective, punched or drilled for fasteners, with

colors, legend, and size required for application.

3. 1/4-inch (6.4-mm) grommets in corners for mounting.

4. Nominal Size: 7 by 10 inches (180 by 250 mm).

B. Metal-Backed Butyrate Signs:

1. Belden, Seton, Brady, Panduit or approved equal. 2. Weather-resistant, nonfading, preprinted, cellulose-acetate butyrate signs, with 0.0396-

inch (1-mm) galvanized-steel backing, punched and drilled for fasteners, and with colors, legend, and size required for application.

3. 1/4-inch (6.4-mm) grommets in corners for mounting. 4. Nominal Size: 10 by 14 inches (250 by 360 mm).

C. Laminated Acrylic or Melamine Plastic Signs:

1. Belden, Seton, Brady, Panduit or approved equal. 2. Engraved legend.

3. Thickness:

a. For signs up to 20 sq. in. (129 sq. cm), minimum 1/16 inch (1.6 mm) thick.

b. For signs larger than 20 sq. in. (129 sq. cm), 1/8 inch (3.2 mm) thick.

c. Engraved legend with black letters on white face.

d. Framed with mitered acrylic molding and arranged for attachment at applicable

equipment.

2.8 CABLE TIES

A. Belden, Seton, Brady, Panduit or approved equal.

B. General-Purpose Cable Ties: Fungus inert, self-extinguishing, one piece, self-locking, and Type

6/6 nylon.

1. Minimum Width: 3/16 inch (5 mm).

2. Tensile Strength at 73 Deg F (23 Deg C) according to ASTM D 638: 12,000 psi (82.7

MPa).

3. Temperature Range: Minus 40 to plus 185 deg F (Minus 40 to plus 85 deg C). 4. Color: Black, except where used for color-coding.

C. Plenum-Rated Cable Ties: Self-extinguishing, UV stabilized, one piece, and self-locking.

1. Minimum Width: 3/16 inch (5 mm).

2. Tensile Strength at 73 Deg F (23 Deg C) according to ASTM D 638: 7000 psi (48.2 MPa).

3. UL 94 Flame Rating: 94V-0.

4. Temperature Range: Minus 50 to plus 284 deg F (Minus 46 to plus 140 deg C).







5. Color: Black.

2.9 MISCELLANEOUS IDENTIFICATION PRODUCTS

A. Paint: Comply with requirements in painting Sections for paint materials and application

requirements. Retain paint system applicable for surface material and location (exterior or

interior).

B. Fasteners for Labels and Signs: Self-tapping, stainless-steel screws or stainless-steel machine

screws with nuts and flat and lock washers.

PART 3 - EXECUTION

3.1 PREPARATION

A. Self-Adhesive Identification Products: Before applying electrical identification products, clean

substrates of substances that could impair bond, using materials and methods recommended by

manufacturer of identification product.

3.2 INSTALLATION

A. Verify and coordinate identification names, abbreviations, colors, and otherfeatures with requirements in other Sections requiring identification applications, Drawings, Shop Drawings, manufacturer's wiring diagrams, and operation and maintenance manual. Use consistent designations throughout Project.

B. Install identifying devices before installing acoustical ceilings and similar concealment.

C. Verify identity of each item before installing identification products.

D. Coordinate identification with Project Drawings, manufacturer's wiring diagrams, and operation

and maintenance manual.

E. Apply identification devices to surfaces that require finish after completing finish work.

F. Install signs with approved legend to facilitate proper identification, operation, and maintenance

of electrical systems and connected items.

G. System Identification for Raceways and Cables under 600 V: Identification shall completely

encircle cable or conduit. Place identification of two-color markings in contact, side by side.

1. Secure tight to surface of conductor, cable, or raceway.

H. System Identification for Raceways and Cables over 600 V: Identification shall completely encircle cable or conduit. Place adjacent identification of two-color markings in contact, side by side.



1. Secure tight to surface of conductor, cable, or raceway.

I. Auxiliary Electrical Systems Conductor Identification: Identify field-installed alarm, control, and signal connections.

J. Emergency Operating Instruction Signs: Install instruction signs with white legend on a red background with minimum 3/8-inch- (10-mm-) high letters for emergency instructions at equipment used for power transfer.

K. Elevated Components: Increase sizes of labels, signs, and letters to those appropriate for viewing from the floor.

L. Accessible Fittings for Raceways: Identify the covers of each junction and pull box of the following systems with the wiring system legend and system voltage. System legends shall be as follows:

1. "EMERGENCY POWER."

2. "NORMAL POWER."

3. "EXTERNAL GENERATOR POWER"

M. Vinyl Wraparound Labels:

1. Secure tight to surface of raceway or cable at a location with high visibility and accessibility. 2. Attach labels that are not self-adhesive type with clear vinyl tape, with adhesive appropriate

to the location and substrate.

N. Snap-around Labels: Secure tight to surface at a location with high visibility and accessibility.

O. Self-Adhesive Wraparound Labels: Secure tight to surface at a location with high visibility and accessibility.

P. Self-Adhesive Labels:

1. On each item, install unique designation label that is consistent with wiring diagrams,

schedules, and operation and maintenance manual. 2. Unless otherwise indicated, provide a single line of text with 1/2-inch- (13-mm-) high letters

on 1-1/2-inch- (38-mm-) high label; where two lines of text are required, use labels 2 inches (50 mm) high.

Q. Snap-around Color-Coding Bands: Secure tight to surface at a location with high visibility and accessibility.

R. Heat-Shrink, Preprinted Tubes: Secure tight to surface at a location with high visibility and accessibility.

S. Marker Tapes: Secure tight to surface at a location with high visibility and accessibility.

T. Self-Adhesive Vinyl Tape: Secure tight to surface at a location with high visibility and accessibility.

1. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for a minimum distance of 6 inches (150 mm) where splices or taps are made. Apply last two turns of tape



with no tension to prevent possible unwinding.

U. Tape and Stencil: Comply with requirements in painting Sections for surface preparation and paint application.

V. Floor Marking Tape: Apply stripes to finished surfaces following manufacturer's written instructions.

W. Underground Line Warning Tape:

1. During backfilling of trenches, install continuous underground-line warning tape directly above cable or raceway at 6 to 8 inches (150 to 200 mm) below finished grade. Use multiple tapes where width of multiple lines installed in a common trench or concrete envelope exceeds 16 inches (400 mm) overall.

2. Limit use of underground-line warning tape to direct-buried cables. 3. Install underground-line warning tape for direct-buried cables and cables in raceways.

X. Metal Tags:

4. Place in a location with high visibility and accessibility. 5. Secure using general-purpose, UV-stabilized cable ties.

Y. Nonmetallic Preprinted Tags:

1. Place in a location with high visibility and accessibility.

2. Secure using general-purpose, UV-stabilized cable ties.

Z. Baked-Enamel Signs:

1. Attach signs that are not self-adhesive type with mechanical fasteners appropriate to the location and substrate.

2. Unless otherwise indicated, provide a single line of text with 1/2-inch- (13-mm-) high letters on minimum 1-1/2-inch- (38-mm-) high sign; where two lines of text are required, use signs minimum 2 inches (50 mm) high.

AA. Metal-Backed Butyrate Signs:


2. Unless otherwise indicated, provide a single line of text with 1/2-inch- (13-mm-) high letters on 1-1/2-inch- (38-mm-) high sign; where two lines of text are required, use labels 2 inches

(50 mm) high.

BB. Laminated Acrylic or Melamine Plastic Signs:


2. Unless otherwise indicated, provide a single line of text with 1/2-inch- (13-mm-) high letters on 1-1/2-inch- (38-mm-) high sign; where two lines of text are required, use labels 2 inches (50 mm) high.



CC. Cable Ties: General purpose, for attaching tags, except as listed below:

1. Outdoors: UV-stabilized nylon. 2. In Spaces Handling Environmental Air: Plenum rated.

3.3 IDENTIFICATION SCHEDULE

A. Install identification materials and devices at locations for most convenient viewing without interference with operation and maintenance of equipment. Install access doors or panels to

provide view of identifying devices.

B. Identify conductors, cables, and terminals in enclosures and at junctions, terminals, pull points,

and locations of high visibility. Identify by system and circuit designation.

C. Accessible Raceways and Metal-Clad Cables, 600 V or Less, for Service, Feeder, and Branch

Circuits, More Than 20 A and 120 V to Ground: Identify with self-adhesive raceway labels or

vinyl tape applied in bands.

1. Locate identification at changes in direction, at penetrations of walls and floors, at 50- foot (15-m) maximum intervals in straight runs, and at 25-foot (7.6-m) maximum intervals in congested areas.

D. Accessible Fittings for Raceways and Cables within Buildings: Identify the covers of each junction and pull box of the following systems with self-adhesive labels containing the wiring system legend and system voltage. System legends shall be as follows:

1. "EMERGENCY POWER." 2. "NORMAL POWER." 3. "EXTERNAL GENERATOR POWER."

E. Power-Circuit Conductor Identification, 600 V or Less: For conductors in vaults, pull and

junction boxes, manholes, and handholes, use vinyl wraparound labels, snap-around labels, snap-around color-coding bands to identify the phase.

1. Locate identification at changes in direction, at penetrations of walls and floors, at 50- foot (15-m) maximum intervals in straight runs, and at 25-foot (7.6-m) maximum intervals in congested areas.

F. Power-Circuit Conductor Identification, More Than 600 V: For conductors in vaults, pull and

junction boxes, manholes, and handholes, use write-on tags.

G. Control-Circuit Conductor Identification: For conductors and cables in pull and junction boxes,

manholes, and handholes, use write-on tags with the conductor or cable designation, origin, and

destination.

H. Control-Circuit Conductor Termination Identification: For identification at terminations, provide

self-adhesive labels with the conductor designation.

I. Conductors to Be Extended in the Future: Attach marker tape to conductors and list source.



J. Auxiliary Electrical Systems Conductor Identification: Self-adhesive vinyl tape that is uniform

and consistent with system used by manufacturer for factory-installed connections.

1. Identify conductors, cables, and terminals in enclosures and at junctions, terminals, and pull points. Identify by system and circuit designation.

K. Workspace Indication: Apply floor marking tape or tape and stencil to finished surfaces. Show

working clearances in the direction of access to live parts. Workspace shall comply with NFPA 70 and 29 CFR 1926.403 unless otherwise indicated. Do not install at flush-mounted

panelboards and similar equipment in finished spaces.

L. Instructional Signs: Self-adhesive labels, including the color code for grounded and ungrounded

conductors.

M. Warning Labels for Indoor Cabinets, Boxes, and Enclosures for Power and Lighting: Self-

adhesive labels or Baked-enamel warning signs.

1. Apply to exterior of door, cover, or other access. 2. For equipment with multiple power or control sources, apply to door or cover of

equipment, including, but not limited to, the following:

a. Power-transfer switches. b. Controls with external control power connections.

N. Operating Instruction Signs: Self-adhesive labels or Baked-enamel warning signs.

O. Emergency Operating Instruction Signs: Self-adhesive labels or Baked-enamel warning signs with white legend on a red background with minimum 3/8-inch- (10-mm-) high letters for emergency instructions at equipment used for power transfer.



SWITCHBOARDS 262413 - 1

SECTION 262413 - SWITCHBOARDS

PART 1 - GENERAL

1.1 SCOPE

A. The contractor shall provide and install dead-front switchboards as herein specified and as

shown on related electrical drawings.


A. All the Contract Documents, including General and Supplementary Conditions and Division 1

General Requirements, apply to the work of this Section.

1.3 SUBMITTALS

A. Product Data: Submit manufacturer's printed product data.

B. Drawings: Submit shop drawings for approval. Include components, materials, finishes, detailed

plan, and elevation views, required conduit rough-in openings, anchors, and accessories.

1.4 RELATED STANDARDS

A. The switchboard shall be designed, manufactured, and tested according to the latest applicable

version of the following standards:

1. ANSI

2. NEMA PB2 – Deadfront Distribution Switchboards

3. UL 891 – Deadfront Switchboards


A. Manufacturer: For equipment required for the work of this section, provide product which is the

responsibility of one manufacturer.

B. Performance Requirements: Provide switchboards manufactured in accordance with Article 408

of the latest National Electrical Code and applicable portions of the NEMA PB2, UL 891 and

NFPA 70, the National Electrical Code.

1.6 DELIVERY, STORAGE AND HANDLING

A. Deliver materials and products in factory labeled packages. Store and handle in strict

compliance with manufacturer's instructions and recommendations. Protect from damage from

weather, excessive temperatures, and construction operations.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Provide SIEMENS SB switchboards and accessories by Siemens or pre-approved equal.

Approved manufacturers are as follows:



1. SIEMENS

2. Eaton / Cutler Hammer

3. Square D

B. For the equipment specified herein, the manufacturer shall be ISO 9000, 9001 or 9002 certified.

C. The manufacturer of this equipment shall have produced similar electrical equipment for a

minimum of ten (10) years.

D. Intent: In the following specifications, products of Siemens are used to provide a standard of

quality and performance for the work of this section.

2.2 GENERAL REQUIREMENTS

A. Construction

1. Switchboard shall be of the modular type construction, constructed in accordance with

the latest NEMA PB-2 and UL 891 standards, with the required number of vertical

sections bolted together to form one metal enclosed rigid switchboard. The sides, top and

rear shall be covered with removable screw-on code gauge steel plates. Switchboard shall

include all protective devices and equipment as listed on drawings with necessary

interconnections, instrumentation, and control wiring. All groups of control wires leaving

the switchboard shall be provided with terminal blocks with suitable numbering strips.

Service entrance switchboards shall be suitable only for use as service equipment and be

labeled in accordance with UL requirements. System voltage, amperage and interrupting

capacity shall be as indicated on the drawings. Enclosure construction shall be NEMA 1

indoor

B. Bus Requirements

1. The bus shall be 1600A and shall be fully rated the entire length of the switchboard. The

bus shall be braced and supported to withstand mechanical forces exerted during a short

circuit from a power source having the available short circuit current as indicated on the

drawings. Provide a full capacity neutral where a neutral is indicated on the drawings.

The through bus on the end section shall be extended and pre-drilled to allow the addition

of future sections. Ground bus and grounding conductor lug shall be furnished. Ground

bus shall extend the entire length of the switchboard and shall be firmly secured to each

vertical section. Bus Material shall be tin plated copper.

C. Incoming Service

1. Incoming:

a. Cable entry: Where necessary, provide top cable pull box and provide construction

that shall be sealable per local utility requirements, when required.

b. Busway Entry when applicable, to be fed by Siemens Sentron busway, as detailed

on drawings and other sections of this specification. The switchboard manufacturer

shall be responsible for coordination, proper phasing, and internal bussing to the

incoming busway.

2. Service Section:



a. The service section shall be designed for the system parameters indicated and shall

have a main protective device as indicated.

3. Lugs:

a. Screw-type mechanical lugs to terminate copper cable shall be provided as detailed

on the drawings.

D. Main Protective Devices will be per drawings and one of the following:

1. Molded case circuit breaker shall be of the quick-make, quick-break, trip-free, solid state

type. The solid-state breakers continuous current rating shall be adjustable from 20 to

100% without the need for a rating plug. Solid state breakers shall be Siemens Sensitrip

IV, VL or equivalent design. Solid state breaker trip functions shall include adjustments

for continuous amperage, long time pickup and delay, instantaneous, short time pickup

and delay, ground fault pickup and delay. Breaker ratings shall be as shown on the

drawings.

a. Any breaker adjustable to 1200A or higher shall have a Dynamic Arc Flash Sentry.

The main breaker shall have a dual protective setting capability similar to Siemens

Sentron breakers Sensitrip IV trip unit. The main breaker will allow the installer to

set two different short time and instantaneous settings into one breaker to comply

with NEC 2014 240.87.

2. WL Insulated Case Breaker, Fixed Mount Main

a. Circuit breakers shall comply with the requirements of UL. Breakers shall be

three-pole, 100% rated type or approved equal.

1.) Circuit breaker element shall have spring charged/discharged indicators and

circuit breaker open or closed and ready to close indicators all of which shall

be visible to the operator with the compartment door closed.

2.) Provide interlocks to prevent racking the circuit breaker unless the breaker is

open.

b. Ratings: Interrupting up to 65 kA at 208V without fuses. Short time current ratings

for each circuit breaker shall be as indicated on the drawings or data tables. Circuit

breakers shall be 600-volt class.

c. Operating Mechanism: Mechanically and electrically trip-free, stored-energy

operating mechanism with the following features:

1.) Normal Closing Speed: independent of both control and operator

d. Each low voltage circuit breaker shall be equipped with self-powered,

microprocessor-based trip-device to sense overload and short circuit conditions.

The device shall measure true RMS current. The tripping system shall consist of

high accuracy (<1%) Rogowski coil sensors on each phase, a release mechanism,

and the following features:

1.) Field Installable and interchangeable front mounted trip units. Trip units can

be upgraded for future expansion in functionality, such as communication.

2.) Functions: Long time, short time and extended instantaneous protection

function (EIP) shall be provided to allow the breaker to be applied at the

withstand rating of the breaker with minus 0% tolerance so that there is no

instantaneous override whatsoever. This feature shall furthermore allow the

circuit breaker to be applied up to the full instantaneous rating of the breaker

on systems where the available fault current exceeds the breakers withstand

rating. Each shall have an adjustable pick-up setting. In addition, long time

and short time bands shall each have adjustable time delay. Short time

function shall include a switchable I2t ramp.



3.) A software program shall be made available free of charge to support

system coordination studies. The software will allow time current curves to

be generated for the chosen settings.

4.) Individual LED’s shall indicate an overcurrent, short circuit, or ground fault

trip condition.

5.) Time-current characteristics shall be field adjustable locally or optionally

remotely via a bus system ModBus or Profibus.

6.) Current adjustability shall be accomplished by use of dial settings and rating

plugs on trip units. The rating plug shall be front mounted and upgradeable.

Upgrades to the rating plugs shall not require changes to the CT.

7.) Pickup Points: 10 Long Time Settings.

E. Distribution Sections

1. Panel-Mounted, Front Accessible - Individual sections shall be front accessible, not less

than 20” deep and the rear of all sections shall align. Incoming line termination, main

device connection and all bolts used to join current-carrying parts shall be installed to

permit servicing from the front only so that no rear access is required. The branch devices

shall be front removable, and panel mounted with line and load side connections front

accessible. The interior shall be capable of accepting panel mounted molded case circuit

breakers or fusible switches up to 1200 A rating. Construction shall be Siemens SB type,

or approved equal.

F. Distribution Section Branch Protective Device

1. All molded case circuit breakers, insulated case circuit breakers or low voltage power

circuit breakers used as a protective device in a branch circuit shall meet the requirements

of their related specifications. Provide Dynamic Arc Flash Sentry for all feeder breakers

that can be rated 1200 amps or higher.

G. Ground Fault Protection (if applicable)

1. Furnish and install in the service equipment and/or switchboard ground fault protection

and indication equipment as shown on drawings in accordance with NEC 230-95. All

parts of the systems specified shall be UL Listed. All new ground fault protection and

indication equipment shall be factory installed, wired, and tested by the switchboard

manufacturer.

H. Finish

1. The complete switchboard shall be phosphatized and finished with ANSI 61 light gray

polyester powder paint.

I. Markings

1 Each switchboard section shall have a label permanently affixed to it, listing the following

information: Name of manufacturer, system voltage, ampacity, type, manufacturer's shop

order number and date.

2 Each section of switchboard shall bear a UL listing mark, where qualified and a short circuit

rating label.

3 Front, side, rear, and top of each switchboard section will have a DANGER label in

accordance with NEMA Standard PB-2.



PART 3 - EXECUTION

3.1 INSTALLATION

A. Examine substrates and conditions in which units will be installed. Check for clearance that will

be required before, during and after equipment installation. Do not proceed with installation

until unsatisfactory conditions are corrected.

B. Strictly comply with manufacturer's instructions and recommendations and NEMA PB 2.1.

Coordinate installation with adjacent work to ensure proper sequence of construction,

clearances, and support.

C. Install units plumbed, leveled and rigid without distortion to the switchboard cubicle(s).

3.2 ADJUSTING AND CLEANING

A. Clean exposed surfaces using manufacturer recommended materials and methods.

B. Touch-up damaged coatings and finishes using non-abrasive materials and methods

recommended by manufacturer. Eliminate all visible evidence of repair.

3.3 TESTING

A. Perform factory and installation tests in accordance with applicable NEC, NEMA and UL

requirements.

3.4 WARRANTY

A. Equipment manufacturer warrants that all goods supplied are free of non-conformities in

workmanship and materials for one year from date of initial operation, or up to eighteen months

from date of shipment.

END OF SECTION


GASEOUS EMERGENCY ENGINE GENERATORS 263213.16 - 1

SECTION 263213.16 - GASEOUS EMERGENCY ENGINE GENERATORS

PART 1 - GENERAL


A. Drawings and general provisions of the Contract, including General and Supplementary Conditions

and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes packaged engine generators for emergency use with the following features:

1. Natural gas engine.

2. Gaseous fuel system.

3. Alternator.

4. Unit-mounted radiator.

5. Control and monitoring.

6. Generator overcurrent and fault protection.

7. Generator, exciter, and voltage regulator.

8. Outdoor engine generator enclosure.

9. Vibration isolation devices.

10. Finishes.

B. Related Requirements:

1. Section 263600 "Automatic Transfer Switches" for transfer switches including sensors and

relays to initiate automatic-starting and -stopping signals for engine generators.

1.3 DEFINITIONS

A. AREP: Auxiliary winding regulation excitation principle. Voltage support for the AVR comes from

independent auxiliary windings located in the main stator.

B. AVR: Automatic voltage regulator.

C. EPS: Emergency power supply.

D. EPSS: Emergency power supply system.

E. NG: Natural Gas

F. Operational Bandwidth: The total variation from the lowest to highest value of a parameter over the

range of conditions indicated, expressed as a percentage of the nominal value of the parameter.



G. PMG: Permanent magnet generator. Voltage support for the AVR comes from an independent

auxiliary permanent magnet generator which is mounted on the shaft extension of the alternator.



1. Include rated capacities, operating characteristics, electrical characteristics, and furnished

specialties and accessories.

2. Include thermal damage curve for generator.

3. Include time-current characteristic curves for generator protective device.

4. Include fuel consumption in cubic feet per hour (cubic meters per hour) at 0.8 power factor at

0.5, 0.75, and 1.0 times generator capacity.

5. Include generator efficiency at 0.8 power factor at 0.5, 0.75, and 1.0 times generator capacity.

6. Include airflow requirements for cooling and combustion air in cubic feet per minute (cubic

meters per minute) at 0.8 power factor, and reference air-supply temperature. Provide

Drawings indicating requirements and limitations for location of air intake and exhausts.

7. Include generator characteristics, including, but not limited to, kilowatt rating, efficiency,

reactances, and short-circuit current capability.

B. Shop Drawings:

1. Include plans and elevations for engine generator and other components specified.

2. Include details of equipment assemblies. Indicate dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field

connection.

3. Identify fluid drain ports and clearance requirements for proper fluid drain.

4. Design calculations for selecting vibration isolators and seismic restraints and for designing

vibration isolation bases.

5. Vibration Isolation Base Details: Detail fabrication, including anchorages and attachments to

structure and supported equipment. Include base weights.

6. Include diagrams for power, signal, and control wiring. Complete schematic, wiring, and

interconnection diagrams showing terminal markings for EPS equipment and functional

relationship between all electrical components.


A. Qualification Data: For Installer, manufacturer, and testing agency

B. Source Quality-Control Reports: Including, but not limited to, the following:

1. Certified summary of prototype-unit test report.

2. Certified Test Reports: For components and accessories that are equivalent, but not identical,

to those tested on prototype unit.

3. Certified Summary of Performance Tests: Certify compliance with specified requirement to

meet performance criteria for sensitive loads.

4. Report of factory test on units to be shipped for this Project, showing evidence of compliance

with specified requirements.

5. Report of sound generation at octave bands in accordance with ISO 8528-10.



6. Report of exhaust emissions showing compliance with applicable regulations.

7. Certified Torsional Vibration Compatibility: Comply with NFPA 110.

C. Field quality-control reports.

D. Warranty: For special warranty.

1.6 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For packaged engine generators to include in emergency,

operation, and maintenance manuals.

1. In addition to items specified in Section 017823 "Operation and Maintenance Data," include

the following:

a. List of tools and replacement items recommended to be stored at Project for ready

access. Include part and drawing numbers, current unit prices, and source of supply.

b. Operating instructions mounted adjacent to generator location.

c. Training plan.

1.7 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective covering

for storage and identified with labels describing contents.

1. Fuses: One for every 10 of each type and rating, but no fewer than one of each.

2. Filters: One set each of lubricating oil, fuel, and combustion-air filters.

3. Indicator Lamps: Two for every six of each type used, but no fewer than two of each.

4. Tools: Each tool listed by part number in operations and maintenance manual.


A. Installer Qualifications: An authorized representative who is trained and approved by manufacturer.

B. Testing Agency Qualifications: Accredited by NETA.

1. Testing Agency's Field Supervisor: Approved by authority having jurisdiction to supervise on-

site testing.

1.9 WARRANTY

A. Manufacturer's Warranty: Manufacturer agrees to repair or replace components of packaged engine

generators and associated auxiliary components that fail in materials or workmanship within

specified warranty period.

1. Warranty Period: Five (5) years Comprehensive from date of Substantial Completion.



PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide MTU Onsite Energy

Corporation or a comparable product by one of the following:

1. MTU Onsite Energy Corporation.

2. Cummins, Inc.

B. Source Limitations:

1. Obtain packaged engine generators and auxiliary components from a single manufacturer.

C. Generator set shall accept rated load in one step per NFPA 110 and the permissible average power

output during 24 hours of operation shall be up to 85%. (Load factor)


A. ANSI B11 Compliance: Comply with ANSI B11.19.

B. NFPA Compliance:

1. Comply with NFPA 37.



4. Comply with NFPA 110 requirements for Level 1 EPSS.

C. UL Compliance: Comply with UL 2200.

D. Engine Exhaust Emissions: Comply with EPA requirements and applicable state and local

government requirements.

E. Noise Emission: Comply with applicable state and local government requirements for maximum

noise level at property line due to sound emitted by engine generator, including engine, engine

exhaust, engine cooling-air intake and discharge, and other components of installation. Comply with

ISO 8528-10 for sound measurements at 3.2 feet (1 m) and 23.0 feet (7 m).

F. Environmental Conditions: Engine generator system shall withstand the following environmental

conditions without mechanical or electrical damage or degradation of performance capability:

1. Ambient Temperature: 68 to 122 deg F (20 to 50 deg C).

2. Relative Humidity: Zero to 95 percent.

3. Altitude: Sea level to 150ft.

G. Unusual Service Conditions: Engine generator equipment and installation are required to operate

under the following conditions:

1. High salt-dust content in the air due to sea-spray evaporation.



2.3 ENGINE GENERATOR ASSEMBLY DESCRIPTION

A. Factory-assembled and -tested, water-cooled engine, with brushless generator and accessories.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a

qualified testing agency, and marked for intended location and use.

C. EPSS Class: Engine generator shall be classified as Class X according to NFPA 110.

D. Service Load: 625 kVA.

E. Power Factor: 0.8.

F. Frequency: 60 Hz.

G. Voltage: 208Y/120V ac.

H. Phase: Three phase, 12 lead wye.

I. Induction Method: Turbocharged.

J. Governor: Adjustable isochronous, with speed sensing.

K. Mounting Frame: Structural-steel framework to maintain alignment of mounted components without

depending on concrete foundation. Provide lifting attachments sized and spaced to prevent deflection

of base during lifting and moving.

1. Rigging Diagram: Inscribed on metal plate permanently attached to mounting frame to

indicate location and lifting capacity of each lifting attachment and engine generator center of

gravity.

L. Capacities and Characteristics:

1. Power Output Ratings: Nominal ratings as indicated at 0.8 power factor excluding power

required for the continued and repeated operation of the unit and auxiliaries.

2. Nameplates: For each major system component to identify manufacturer's name, model, and

serial number, of component.

M. Engine Generator Performance:

1. Steady-State Voltage Operational Bandwidth: 0.25 percent of rated output voltage, from no

load to full load, and one-percent for non-PMG alternators.

2. Load Factor: 85-percent load factor according to ISO 8528-1.

a. If below, supplier shall provide updated documents for performance modified to 85%

load factor in regards to time before overhaul (TBO) and the respective maintenance

schedule.

3. Transient Voltage Performance: Not more than 30 percent variation for 50 percent step-load

increase or decrease. Voltage shall recover and remain within the steady-state operating band

within 3-seconds.

4. Steady-State Frequency Operational Bandwidth: One-percent of rated frequency, from no load

to full load.



5. Steady-State Frequency Stability: When system is operating at any constant load within the

rated load, there shall be no random speed variations outside the steady-state operational band

and no hunting or surging of speed.

6. Transient Frequency Performance: Less than 10 percent variation for 50 percent step-load

increase or decrease. Frequency shall recover and remain within the steady-state operating

band within five seconds.

7. Output Waveform: At no load, harmonic content measured line to line or line to neutral shall

not exceed 5 percent total and 3 percent for single harmonics. Telephone influence factor,

determined according to NEMA MG 1, shall not exceed 50 percent.

8. Sustained Short-Circuit Current: For a three-phase, bolted short circuit at system output

terminals, system shall supply a minimum of 300 percent of rated full-load current for not less

than 10 seconds and then clear the fault automatically with PMG/AREP, without damage to

generator system components.

9. Start Time: Comply with NFPA 110, Type 10, system requirements.

N. Engine Generator Performance for Sensitive Loads:

1. Oversizing generator compared with the rated power output of the engine is permissible to

meet specified performance.

a. Nameplate Data for Oversized Generator: Show ratings required by the Contract

Documents rather than ratings that would normally be applied to generator size

installed.

2. Sustained Short-Circuit Current: For a three-phase, bolted short circuit at system output

terminals, system shall supply a minimum of 300 percent of rated full-load current for not less

than 10 seconds and then clear the fault automatically, without damage to winding insulation

or other generator system components.

3. Excitation System: Performance shall be unaffected by voltage distortion caused by nonlinear

load.

a. Provide permanent magnet excitation for power source to voltage regulator.

1. Start Time: Comply with NFPA 70 Articles 695 and 700. Comply with NFPA 110 Type 10

system requirements.

2.4 ENGINE

A. Fuel: Natural gas.

B. Rated Engine Speed: 1800 rpm.

C. Lubrication System: Engine or skid mounted.

1. Filter and Strainer: Select according to engine manufacturer's requirements for particle

removal.

2. Thermostatic Control Valve: Control flow in system to maintain optimum oil temperature.

Unit shall be capable of full flow and is designed to be fail-safe.

3. Crankcase Drain: Arranged for complete gravity drainage to an easily removable container

with no disassembly and without use of pumps, siphons, special tools, or appliances.



D. Jacket Coolant Heater: Electric-immersion type, factory installed in coolant jacket system. Comply

with NFPA 110 requirements for Level 1 equipment for heater capacity and with UL 499. Jacket

Heater shall be supplied @ 208v, single phase.

E. Cooling System: Closed loop, liquid cooled, with radiator factory mounted on engine generator

mounting frame and integral engine-driven coolant pump.

1. Coolant: Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent

water, with anticorrosion additives as recommended by engine manufacturer.

2. Size of Radiator: Adequate to contain expansion of total system coolant, from cold start to 110

percent load condition.

3. Expansion Tank: Rated to withstand maximum closed-loop coolant-system pressure for engine

used. Equip with gage glass and petcock.

4. Temperature Control: Self-contained, thermostatic-control valve modulates coolant flow

automatically to maintain optimum constant coolant temperature as recommended by engine

manufacturer.

5. Coolant Hose: Flexible assembly with inside surface of nonporous rubber and outer covering

of aging-, UV-, and abrasion-resistant fabric.

a. Rating: 50-psig (345-kPa) maximum working pressure with coolant at 180 deg F (82

deg C), and non-collapsible under vacuum.

b. End Fittings: Flanges or steel pipe nipples with clamps to suit piping and equipment

connections.

F. Muffler/Silencer: Internal Critical grade, sized as recommended by engine manufacturer and selected

with exhaust piping system to not exceed engine manufacturer's engine backpressure requirements.

1. Minimum sound attenuation of 25 dB.

2. Sound level measured at 7 meters (23 feet) from enclosure after installation is complete shall

be 69.3 dBA or less.

G. Air-Intake Filter: Heavy -duty, engine-mounted air cleaner with replaceable dry-filter element and

"blocked filter" indicator.

H. Starting System: 24-V electric, with negative ground.

1. Components: Sized so they are not damaged during a full engine-cranking cycle, with ambient

temperature at maximum specified in "Performance Requirements" Article.

2. Cranking Motor: Heavy-duty unit that automatically engages and releases from engine

flywheel without binding.

3. Cranking Cycle: Cranking Cycle: As required by NFPA 110 for system level specified.

4. Battery: Lead acid, with capacity within ambient temperature range specified in "Performance

Requirements" Article to provide NFPA 110 specified cranking cycle without recharging.

5. Battery Cable: Size as recommended by engine manufacturer for cable length indicated.

Include required interconnecting conductors and connection accessories.

6. Battery Compartment: Factory fabricated of metal with acid-resistant finish and thermal

insulation. Include accessories required to support and fasten batteries in place.

a. Compartment Heater: Thermostatically controlled heater shall be arranged to maintain

battery above 50 deg F (10 deg C) regardless of external ambient temperature within

range specified in "Performance Requirements" Article.

b. Compartment Ventilation: Provide ventilation to exhaust battery gases.



7. Battery Stand: Factory-fabricated, two-tier metal with acid-resistant finish designed to hold the

quantity of battery cells required and to maintain the arrangement to minimize lengths of

battery interconnections.

8. Battery-Charging Alternator: Factory mounted on engine with solid-state voltage regulation

and 35A minimum continuous rating.

9. Battery Charger: Current-limiting, automatic-equalizing and float-charging type designed for

lead-acid batteries. Unit shall comply with UL 1236 and include the following features:

a. Operation: Equalizing-charging rate of 10 A shall be initiated automatically after battery

has lost charge until an adjustable equalizing voltage is achieved at battery terminals.

Unit shall then be automatically switched to a lower float-charging mode and shall

continue to operate in that mode until battery is discharged again.

b. Automatic Temperature Compensation: Adjust float and equalize voltages for variations

in ambient temperature from minus 40 to 140 deg F (minus 40 to plus 60 deg C) to

prevent overcharging at high temperatures and undercharging at low temperatures.

1) Temperature Probe: Equip battery charger with a temperature probe on the

negative cable when battery heaters are used.

c. Automatic Voltage Regulation: Maintain constant output voltage regardless of input

voltage variations up to plus or minus 10 percent.

d. Ammeter and Voltmeter: Flush mounted. Meters shall indicate charging rates.

e. Safety Functions: Sense abnormally low battery voltage and close contacts providing

low battery voltage indication on control and monitoring panel. Sense high battery

voltage and loss of ac input or dc output of battery charger. Either condition shall close

contacts that provide a battery-charger malfunction indication at system control and

monitoring panel.

f. Enclosure and Mounting: NEMA 250, Type 1, unit-mounted cabinet.

2.5 GASEOUS FUEL SYSTEM

A. Natural Gas Piping: Comply with requirements in Section 231123 "Facility Natural Gas Piping."

B. Gas Train: Comply with NFPA 37.

C. Engine Fuel System:

1. Natural Gas - Withdrawal System:

a. Carburetor.

b. Secondary Gas Regulators: One for each fuel type, with atmospheric vents piped to

building exterior.

c. Fuel-Shutoff Solenoid Valves: NRTL-listed, normally closed, safety shutoff valves; one

for each fuel source.

2. Manual Fuel Shutoff Valves: One for each fuel type.

3. Flexible Fuel Connectors: Minimum one for each fuel connection.

4. Gas flow adjusting valve.

5. Fuel change gas pressure switch for each fuel source (if applicable).

6. Fuel Supply Pressure: 7-11 in H2O



2.6 CONTROL AND MONITORING

A. Automatic Starting System Sequence of Operation: When mode-selector switch on the control and

monitoring panel is in the automatic position, remote-control contacts in one or more separate

automatic transfer switches initiate starting and stopping of engine generator. When mode-selector

switch is switched to the on position, engine generator starts. The off position of same switch

initiates engine generator shutdown. When engine generator is running, specified system or

equipment failures or derangements automatically shut down engine generator and initiate alarms.

B. Manual Starting System Sequence of Operation: Switching On-Off switch on the generator control

panel to the on position starts engine generator. The off position of same switch initiates engine

generator shutdown. When engine generator is running, specified system or equipment failures or

derangements automatically shut down engine generator and initiate alarms.

C. Provide minimum run-time control set for 30 minutes, with override only by operation of a remote

emergency-stop switch.

D. Comply with UL 2200 for stationary engine generator assemblies and UL 508A for ancillary

controls, such as Master Control Panel mounted off the generator set.

E. Configuration: Operating and safety indications, protective devices, basic system controls, engine

gages, instrument transformers, generator disconnect switch or circuit breaker, and other indicated

components shall be grouped in a combination control and power panel. Control and monitoring

section of panel shall be isolated from power sections by steel barriers. Panel shall be powered from

the engine generator battery. Panel features shall include the following:

1. Unit-Mounting Cabinet Construction: Rigid, self-supporting steel unit complying with

NEMA ICS 6 and NEMA 250.

F. Control and Monitoring Panel:

1. Digital controller with integrated LCD display, controls, and microprocessor, capable of local

and remote control, monitoring, and programming, with battery backup.

2. Analog control panel with dedicated gages and indicator lights for the instruments and alarms

indicated below.

3. Instruments: Located on the control and monitoring panel and viewable during operation.

a. Engine lubricating-oil pressure gage.

b. Engine-coolant temperature gage.

c. DC voltmeter (alternator battery charging).

d. Running-time meter.

e. AC voltmeter, for each phase

f. AC ammeter, for each phase

g. AC frequency meter.

h. Digital generator-voltage-adjusting feature to allow plus or minus 5 percent adjustment.

4. Controls and Protective Devices: Controls, shutdown devices, and common visual alarm and

pre-alarm indication as required by NFPA 110 for Level 1 system, including the following:

a. Cranking control equipment.

b. Run-Off-Auto switch.



c. Control switch not in automatic position alarm.

d. Over-crank alarm.

e. Over-crank shutdown device.

f. Low water temperature alarm.

g. High engine temperature pre-alarm.

h. High engine temperature.

i. High engine temperature shutdown device.

j. Engine exhaust temperature.

k. High engine exhaust temperature alarm.

l. Overspeed alarm.

m. Overspeed shutdown device.

n. Low-fuel main tank.

1) Low-fuel-level alarm shall be initiated when the level falls below that required

for operation for the duration required for the indicated EPSS class.

o. Coolant low-level alarm.

p. Coolant low-level shutdown device.

q. Coolant high-temperature pre-alarm.

r. Coolant high-temperature alarm.

s. Coolant low-temperature alarm.

t. Coolant high-temperature shutdown device.

u. EPS load indicator.

v. Battery high-voltage alarm.

w. Low-cranking voltage alarm.

x. Battery-charger malfunction alarm.

y. Battery low-voltage alarm.

z. Lamp test.

aa. Contacts for local and remote common alarm.

bb. Low-starting air pressure alarm.

cc. Low-starting hydraulic pressure alarm.

dd. Remote manual-stop shutdown device.

ee. Generator overcurrent-protective-device not-closed alarm.

ff. Generator overspeed.

gg. Generator over and under voltage.

hh. Dead bus.

ii. Reverse power.

jj. Ground fault control.

G. Connection to Datalink:

1. A separate terminal block, factory wired to Form C dry contacts, for each alarm and status

indication.

2. Provide connections for datalink transmission of indications to remote data terminals via

ModBus.

3. Provide USB or TCP communication interface.

4. Additional inputs and outputs:

a. Inputs:

1) Digital: Sixteen to twenty-six configurable digital inputs.

2) Analog: Three to eleven configurable analog inputs.



3) Thermocouples: None.

4) RTD: Zero to eight RTD inputs.

b. Outputs:

1) 30-A: Three configurable outputs.

2) 10-A: Zero to ten configurable outputs.

3) 4-A: Zero to twelve configurable outputs.

4) 2-A: Twelve configurable outputs.

5) 1-A: Zero to twelve configurable outputs.

H. Common Remote Panel with Common Audible Alarm: Comply with NFPA 110 requirements for

Level 1 systems. Include necessary contacts and terminals in control and monitoring panel. Remote

panel shall be powered from the engine generator battery.

I. Remote Display Panel: Comply with NFPA 99. An LED indicator light labeled with proper alarm

conditions shall identify each alarm event, and a common audible signal shall sound for each alarm

condition. Silencing switch in face of panel shall silence signal without altering visual indication.

Connect so that after an alarm is silenced, clearing of initiating condition will reactivate alarm until

silencing switch is reset. Cabinet and faceplate are surface- or flush-mounting type to suit mounting

conditions indicated.

1. Over-crank alarm.

2. Coolant low-temperature alarm.

3. High engine temperature pre-alarm.

4. High engine temperature alarm.

5. Low lube oil pressure alarm.

6. Overspeed alarm.

7. Low-fuel main tank alarm.

8. Low coolant level alarm.

9. Low-cranking voltage alarm.

10. Contacts for local and remote common alarm.

11. Audible-alarm silencing switch.

12. Run-Off-Auto switch.

13. Control switch not in automatic position alarm.

14. Fuel tank derangement alarm.

15. Fuel tank high-level shutdown of fuel supply alarm.

16. Lamp test.

17. Low-cranking voltage alarm.

18. Generator overcurrent-protective-device not-closed alarm.

J. Supporting Items: Include sensors, transducers, terminals, relays, and other devices and include

wiring required to support specified items. Locate sensors and other supporting items on engine or

generator unless otherwise indicated.

K. Remote Emergency-Stop Switch: Flush; wall mounted unless otherwise indicated; and labeled. Push

button shall be protected from accidental operation.



2.7 GENERATOR OVERCURRENT AND FAULT PROTECTION

A. Overcurrent protective devices for the entire EPSS shall be coordinated to optimize selective tripping

when a short circuit occurs. Coordination of protective devices shall consider both utility and EPSS

as the voltage source.

1. Overcurrent protective devices for the EPSS shall be accessible only to authorized personnel.

B. Generator Circuit Breaker: Molded-case, electronic-trip type; 100 percent rated; complying with

UL 489.

1. Tripping Characteristics: Adjustable long-time and short-time delay and instantaneous.

2. Trip Settings: Selected to coordinate with generator thermal damage curve.

3. Shunt Trip: Connected to trip breaker when engine generator is shut down by other protective

devices.

4. Mounting: Adjacent to or integrated with control and monitoring panel.

C. Generator Protector: Microprocessor-based unit shall continuously monitor current level in each

phase of generator output, integrate generator heating effect over time, and predict when thermal

damage of alternator will occur. When signaled by generator protector or other engine generator

protective devices, a shunt-trip device in the generator disconnect switch shall open the switch to

disconnect the generator from load circuits.

D. Ground-Fault Indication: Comply with NFPA 70 Article 700, "Emergency System" signals for

ground fault.

1. Indicate ground fault with other engine generator alarm indications.

2.8 GENERATOR, EXCITER, AND VOLTAGE REGULATOR

A. Comply with NEMA MG 1.

B. Drive: Generator shaft shall be directly connected to engine shaft. Exciter shall be rotated integrally

with generator rotor.

C. Electrical Insulation: Class H or Class F.

D. Stator-Winding Leads: Brought out to terminal box to permit future reconnection for other voltages if

required. Provide 12-lead alternator.

E. Range: Provide limited range of output voltage by adjusting the excitation level.

F. Construction shall prevent mechanical, electrical, and thermal damage due to vibration, overspeed up

to 125 percent of rating, and heat during operation at 100 percent of rated capacity.

G. Enclosure: Drip proof.

1. Ingress Protection Rating (IP): Follow IEC 60529 and IP23

H. Instrument Transformers: Mounted within generator enclosure.



I. Voltage Regulator: Solid-state type, separate from exciter, providing performance as specified and as

required by NFPA 110.

1. Digital Adjustment on Control and Monitoring Panel: Provide plus or minus 5 percent

adjustment of output-voltage operating band.

J. Strip Heater: Thermostatically controlled unit arranged to maintain stator windings above dew point.

K. Windings: Two-thirds pitch stator winding and fully linked amortisseur winding.

2.9 OUTDOOR ENGINE GENERATOR ENCLOSURE

A. Description: Vandal-resistant, sound-attenuating (average of 69.3 dBA @ 23’), weather house

aluminum enclosure, wind resistant up to 186 mph and missile impact rated. Multiple panels shall be

lockable and provide adequate access to components requiring maintenance. Instruments and control

shall be mounted within enclosure.

B. Description: Enclosure must be assembled on a square tubing welded aluminum perimeter frame.

This frame must have aluminum angle tabs welded on the inside face for bolting the frame to the

tank.

C. Structural Design and Anchorage: Comply with ASCE/SEI 7-10 for wind loads up 186 mph.

D. Hinged Doors: Manufacturer's standard construction with padlocking provisions. Stainless Steel door

hardware

E. Enclosure with Fixed Intake hurricane louver and External Discharge Hood.

F. Lighting: Provide weather-resistant AC/DC-powered lighting with 30 fc (330 lx) average maintained.

G. Insulation: Standard materials and thickness (Acoustical Foam) for the enclosure to reduce minimum

25 dBA sound level at 23’.

H. Muffler Location: Within enclosure.

I. Engine-Cooling Airflow through Enclosure: Maintain temperature rise of system components within

required limits when unit operates at 100 percent of rated load for two hours with ambient

temperature at top of range specified in system service conditions.

1. Louvers: Fixed-engine, cooling-air inlet. Stormproof, drainable, sound and hurricane rated

louver to prevent entry of rain and achieve the required sound attenuation.

J. Interior Lights with Switch: Factory-wired, vapor-proof luminaires within housing; arranged to

illuminate controls and accessible interior. Arrange for external electrical connection.

1. AC lighting system and connection point for operation when remote source is available.

2. DC lighting system for operation when remote source and generator are both unavailable.

K. Convenience Outlets: Factory-wired, GFCI. Arrange for external electrical connection.

L. An enclosure lift base shall be installed under the enclosure.



M. Sound Attenuation: When measured at 23.0 feet (7 m) from sides of unit, sound level shall be 69.3

dBA or less. Octave band sound report shall be provided based on similar unit construction.

2.10 VIBRATION ISOLATION DEVICES

A. Restrained Spring Isolators: Freestanding, steel, open-spring isolators with seismic restraint.

1. Housing: Steel with resilient vertical-limit stops to prevent spring extension due to wind loads

or if weight is removed; factory-drilled baseplate bonded to 1/4-inch- (6-mm-) thick,

elastomeric isolator pad incorporated into isolator housing; and adjustable equipment-

mounting and -leveling bolt that acts as blocking during installation.

B. Vibration isolation devices shall not be used to accommodate misalignments or to make bends.

2.11 FINISHES

A. Indoor Enclosures and Components: Powder-coated finish over steel enclosure.

1. Components: Liquid paint.

B. Outdoor Enclosures and Components: Aluminum enclosure.

1. Components: Liquid paint.

2.12 SOURCE QUALITY CONTROL

A. Prototype Testing: Factory test engine generator using same engine model, constructed of identical or

equivalent components, and equipped with identical or equivalent accessories.

1. Tests: Comply with NFPA 110, Level 1 Energy Converters and with IEEE 115.

B. Project-Specific Equipment Tests: Before shipment, factory test engine generator and other system

components and accessories manufactured specifically for this Project. Perform tests at rated load

and power factor. Include the following tests:

1. Test components and accessories furnished with installed unit that are not identical to those on

tested prototype to demonstrate compatibility and reliability.

2. Test generator, exciter, and voltage regulator as a unit.

3. Full-load run.

4. Maximum power.

5. Voltage regulation.

6. Transient and steady-state governing.

7. Single-step load pickup.

8. Safety shutdown.

9. Provide 14 days' advance notice of tests and opportunity for observation of tests by Owner's

representative.

10. Report factory test results within 5 days of completion of test.



PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas, equipment bases, and conditions, with Installer present, for compliance with

requirements for installation and other conditions affecting packaged engine generator performance.

B. Examine roughing-in for piping systems and electrical connections to verify actual locations of

connections before packaged engine generator installation.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Interruption of Existing Electrical Service: Do not interrupt electrical service to facilities occupied by

Owner or others unless permitted under the following conditions and then only after arranging to

provide temporary electrical service according to requirements indicated:

1. Notify Owner and Electrical EOR no fewer than two working days in advance of proposed

interruption of electrical service.

2. Do not proceed with interruption of electrical service without Owner’s written permission.

3.3 INSTALLATION

A. Comply with NECA 1 and NECA 404.

B. Comply with packaged engine generator manufacturers' written installation and alignment

instructions and with NFPA 110.

C. Equipment Mounting:

1. Install packaged engine generators on cast-in-place concrete equipment bases. Comply with

requirements for equipment bases and foundations specified in Section 033000 "Cast-in-Place

Concrete."

2. Coordinate size and location of concrete bases for packaged engine generators. Cast anchor-

bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified with

concrete.

3. Install packaged engine generator and enclosure with restrained spring isolators having a

minimum deflection of 1 inch (25 mm). Install complete package on high concrete base.

Secure package to anchor bolts installed in concrete bases.

4. Install packaged engine generator to provide access, without removing connections or

accessories, for periodic maintenance.

D. Cooling System: Install Schedule 40 black steel piping with welded joints for cooling water piping

between engine generator and heat exchanger.

1. Install isolating thimbles where exhaust piping penetrates combustible surfaces. Provide a

minimum of 9 inches (225 mm) of clearance from combustibles.

2. Insulate cooling-system piping and components.



E. Gaseous Fuel Piping:

1. Natural gas piping, valves, and specialties for gas distribution are specified in Section 231123

"Facility Natural Gas Piping."

F. Electrical Wiring: Install electrical devices furnished by equipment manufacturers but not specified

to be factory mounted.

3.4 CONNECTIONS

A. Piping installation requirements are specified in other Sections. Drawings indicate general

arrangement of piping and specialties.

B. Connect fuel, cooling-system, and exhaust-system piping adjacent to packaged engine generator to

allow service and maintenance.

C. Connect engine exhaust pipe to engine with flexible connector.

D. Gaseous Fuel Connections:

1. Connect fuel piping to engines with a gate valve and union and flexible connector.

2. Install manual shutoff valve in a remote location to isolate gaseous fuel supply to the

generator.

3. Vent gas pressure regulators outside building a minimum of 60 inches (1500 mm) from

building openings.

E. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical Systems."

F. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and

Cables." Provide a minimum of one 90-degree bend in flexible conduit routed to the engine generator

from a stationary element.

G. Balance single-phase loads to obtain a maximum of 10 percent unbalance between any two phases.

3.5 IDENTIFICATION

A. Identify system components according to Section 260553 "Identification for Electrical Systems."


A. Manufacturer’s Field Service: Engage a factory-authorized service representative to test and inspect

components, assemblies, and equipment installations, including connections.

B. Perform tests and inspections with the assistance of a factory-authorized service representative.

C. Tests and Inspections:



1. Perform tests recommended by manufacturer and each visual and mechanical inspection and

electrical and mechanical test listed in first two subparagraphs below, as specified in

NETA ATS. Certify compliance with test parameters.

a. Visual and Mechanical Inspection:

1) Compare equipment nameplate data with Drawings and the Specifications.

2) Inspect physical and mechanical condition.

3) Inspect anchorage, alignment, and grounding.

4) Verify that the unit is clean.

b. Electrical and Mechanical Tests:

1) Perform insulation-resistance tests according to IEEE 43.

a) Machines Larger Than 200 hp (150 kW): Test duration shall be 10

minutes. Calculate polarization index.

b) Machines 200 hp (150 kW) or Less: Test duration shall be one minute.

Calculate the dielectric-absorption ratio.

c) Test can be done by the manufacturer during assembly in the case where

field test requires disassembly of factory wiring and can void warranty.

2) Test protective relay devices.

3) Verify phase rotation, phasing, and synchronized operation as required by the

application.

4) Functionally test engine shutdown for low oil pressure, overtemperature,

overspeed, and other protection features as applicable.

5) Perform vibration test for each main bearing cap.

6) Conduct performance test according to NFPA 110.

7) Verify correct functioning of the governor and regulator.

2. NFPA 110 Acceptance Tests: Perform tests required by NFPA 110 that are additional to those

specified here including, but not limited to, single-step full-load pickup test.

3. Battery Tests: Equalize charging of battery cells according to manufacturer's written

instructions. Record individual cell voltages.

a. Measure charging voltage and voltages between available battery terminals for full-

charging and float-charging conditions. Check electrolyte level and specific gravity

under both conditions.

b. Test for contact integrity of all connectors. Perform an integrity load test and a capacity

load test for the battery.

c. Verify acceptance of charge for each element of the battery after discharge.

d. Verify that measurements are within manufacturer's specifications.

4. Battery-Charger Tests: Verify specified rates of charge for both equalizing and float-charging

conditions.

5. System Integrity Tests: Methodically verify proper installation, connection, and integrity of

each element of engine generator system before and during system operation. Check for air,

exhaust, and fluid leaks.



6. Exhaust-System Back-Pressure Test: Use a manometer with a scale exceeding 40-inch wg

(120 kPa). Connect to exhaust line close to engine exhaust manifold. Verify that back pressure

at full-rated load is within manufacturer's written allowable limits for the engine.

7. Exhaust Emissions Test: Comply with applicable government test criteria.

8. Voltage and Frequency Transient Stability Tests: Use recording oscilloscope to measure

voltage and frequency transients for 50 and 100 percent step-load increases and decreases and

verify that performance is as specified.

9. Harmonic-Content Tests: Measure harmonic content of output voltage at 25 and 100 percent

of rated linear load. Verify that harmonic content is within specified limits.

10. Noise Level Tests: Measure A-weighted level of noise emanating from engine generator

installation, including engine exhaust and cooling-air intake and discharge, at four (4)

locations 23 feet (7 m) from edge of the generator enclosure or on the property line, and

compare measured levels with required values.

D. Coordinate tests with tests for transfer switches and run them concurrently.

E. Test instruments shall have been calibrated within the past 12 months, traceable to NIST Calibration

Services, and adequate for making positive observation of test results. Make calibration records

available for examination on request.

F. Leak Test: After installation, charge exhaust, coolant, and fuel systems and test for leaks. Repair

leaks and retest until no leaks exist.

G. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor

rotation and unit operation for generator and associated equipment.

H. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

I. Remove and replace malfunctioning units and retest as specified above.

J. Retest: Correct deficiencies identified by tests and observations, and retest until specified

requirements are met.

K. Report results of tests and inspections in writing. Record adjustable relay settings and measured

insulation resistances, time delays, and other values and observations. Attach a label or tag to each

tested component indicating satisfactory completion of tests.

L. Infrared Scanning: After Substantial Completion, but not more than 60 days after final acceptance,

perform an infrared scan of each power wiring termination and each bus connection while running

with maximum load. Remove all access panels, so terminations and connections are accessible to

portable scanner.

1. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan 11 months after

date of Substantial Completion.

2. Instrument: Use an infrared scanning device designed to measure temperature or to detect

significant deviations from normal values. Provide calibration record for device.

3. Record of Infrared Scanning: Prepare a certified report that identifies terminations and

connections checked and that describes scanning results. Include notation of deficiencies

detected, remedial action taken, and observations after remedial action.



3.7 MAINTENANCE SERVICE

A. Initial Maintenance Service: Beginning at Substantial Completion, maintenance service shall include

Twelve (12) months' full maintenance by skilled employees of manufacturer's authorized service

representative. Include quarterly preventive maintenance and exercising to check for proper starting,

load transfer, and running under load. Include routine preventive maintenance as recommended by

manufacturer and adjusting as required for proper operation. Parts shall be manufacturer's authorized

replacement parts and supplies.

3.8 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust,

operate, and maintain packaged engine generators.

3.9 LONG TERM STORAGE

A. In the event the packaged engine generator sits for more than one month without being operated, the

following provisions shall be followed:

1. Comply with the manufacturer's storage requirements.

2. Engage a factory-authorized service technician to put packaged engine generator back into

service before running.

END OF SECTION 263213.16


AUTOMATIC TRANSFER SWITCHES 26 36 00 - 1

SECTION 26 36 00 – AUTOMATIC TRANSFER SWITCHES

PART 1 GENERAL




1.02 SCOPE

A. Furnish and install the low voltage automatic transfer switches having the ratings,

features/accessories and enclosures as specified herein and as shown on the contract drawings.

1.03 REFERENCES A. The automatic transfer switches and all components shall be designed, manufactured and tested in

accordance with the latest applicable standards of UL and NEMA as follows: 1. UL 1008 – Transfer Switches

2. UL 991 - Tests for Safety-Related Controls Employing Solid-State Devices

3. NFPA 70 – National Electrical Code

4. NFPA 110 – Emergency and Standby Power Systems

5. NEMA ICS 10 – AC Transfer Switch Equipment

6. IEEE 446 – Recommended Practice for Emergency and Standby Power Systems


A. Product Data: For each type of product indicated. Include rated capacities, weights, operating

characteristics, furnished specialties, and accessories.

1. Technical data on all major components of all transfer switches and other products described

in this section. Data is required for the transfer switch mechanism, control system, cabinet,

and protective devices specifically listed for use with each transfer switch. Include stead

stated and fault current ratings weights, operating characteristics and furnished specialties and

accessories. The following information shall be submitted to the Engineer for each switch

specified:

a. Dimensioned outline drawings of assembly, including elevations, sections, and details

including minimal clearances, conductor entry provisions, gutter space, installed features

and devices and material lists for each switch specified.

b. Schematic diagram and internal electrical wiring drawings

c. Conduit space locations within the assembly

d. Assembly ratings including:

1. Withstand and Closing rating for contactor and circuit breaker



2. Voltage

3. Continuous current rating

4. Short-Time rating if applicable

5. Short-circuit rating if ordered with integral protection

e. Cable terminal sizes

f. Product Specification Sheets

g. Installation and mounting instructions, including information for proper installation of

equipment to meet seismic requirements.

1.05 INFORMATIONALSUBMITTALS

A. Manufacturer and Supplier Qualification Data

1. The transfer switch manufacturer shall be certified to ISO 9001 International Quality Standard

and shall have third party certification verifying quality assurance in design/development,

production, installation, and service, in accordance with ISO 9001.

a. The manufacturer of this equipment shall have produced similar equipment for a

minimum period of 10 years.

b. Operation and Maintenance Data: For each switch to include in operation and

maintenance manuals.

c. Warranty documents demonstrating compliance with the project’s contract requirements.


A. Only approved bidders shall supply equipment provided under this contract.

1. Manufacturer Qualifications: The equipment supplier shall maintain a service center capable

of providing training, parts, maintenance and emergency repairs to equipment, including

transfer switch, generator sets and remote monitoring equipment (if applicable) at the site

within a response period of less than eight hours from time of notification.

2. The transfer switch shall be serviced by technicians employed by, and specially trained and

certified by, the generator set supplier and the supplier shall have a service organization that

is factory-certified in the generator set and transfer switch service.

3. The manufacturer shall maintain model and serial number records of each transfer switch

provided for at least 10 years.

4. Source Limitations: All transfer switches are to be obtained through one source from a single

manufacturer. The generator set manufacturer shall warrant transfer switches to provide a

single source of responsibility for products provided. The transfer switch manufacturer shall

be the same for power switching devices and controllers, so they are built and tested as one

unit for quality assurance purposes



5. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA

70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked

as suitable for use in emergency, legally required or optional standby use as appropriate for

the connected load.

1.07 PROJECT CONDITIONS

A. Interruption of Existing Electrical Service: Do not interrupt electrical service to facilities occupied

by Owner or others unless permitted under the following conditions and then only after arranging

to provide temporary electrical service:

1. Notify the Construction Manager, Owner and EOR no fewer than 14 calendar days in advance

of proposed interruption of electrical service.

2. Do not proceed with interruption of electrical service without the Construction Manager and

Owner’s written permission.

3. Do not energize any new service or distribution equipment without notification and

permission of the EOR, Construction Manager, Owner.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. ASCO Power Technologies 300 Series or approved equal.

B. The listing of specific manufacturers above does not imply acceptance of their products that do

not meet the specified ratings, features and functions. Manufacturers listed above are not relieved

from meeting these specifications in their entirety. Products in compliance with the specification

and manufactured by others not named will be considered only if pre-approved by the engineer

ten (10) days prior to bid date.

2.02 CONSTRUCTION

A. Power Switching Device:

1. Switching devices shall be momentarily energized solenoid operated contactor type

mechanisms. All contactors shall be UL listed for application in their intended enclosures for

100% of their continuous ampere rating.

2. Each transfer switch shall be positively interlocked both mechanically and electrically to

prevent simultaneous closing of both sources under either automatic or manual operation.

Main contacts shall be mechanically held in position in both normal and emergency positions.

B. Service Entrance Circuit Breaker: Molded-case, electronic-trip type; 100 percent rated; complying

with UL 489.

1. Tripping Characteristics: Adjustable long-time and short-time delay and instantaneous.

2. Trip Settings: Selected to coordinate with building loads per NEC 700.

3. Mounting: Each circuit breaker installed in separate compartment from the switching

mechanism

4. Provide Energy reduction maintenance switch per NEC 240.87



C. Transfer switches shall be open transition and provided with an in-phase monitor feature, which

will permit a transfer or re-transfer between two live sources that have a phase angle difference

of +/- 8 degrees or less. In the event that the switch cannot transfer in-phase, the switch will

default to a time delay in neutral transfer adjustable 0-120 seconds.

D. The automatic transfer switch shall be of double throw construction operated by a reliable

electrical mechanism momentarily energized.

E. Contactors or components not specifically designed, as an automatic transfer switch will not be

acceptable.

F. The switching panel shall consist of the contactor assembly and a separate control or transformer

panel. The transformer shall be multi-tap for ease of voltage adjustment in the field. Control

power for all transfer operations shall be derived from the line side of the source to which the load

is being transferred.

G. Transfer switches will be supplied with a manual-operating handle. Manual operation, using

handle, shall only be performed with the switch de-energized.

H. On transfer switches requiring a fourth pole for switching the neutral, the neutral shall be identical

to the other power poles. Switched neutral poles which are add-on or overlap, or that are not

capable of breaking full rated load current are not acceptable.

I. On transfer switches requiring a solid neutral, the neutral shall be fully rated.

2.02 MICROPROCESSOR LOGIC

A. The controller shall be hardened against potential problems from transients and surges. Operation

of the transfer switch and monitoring of both sources shall be managed by the controller.

B. The automatic transfer switch controllers shall meet or exceed the following standards in addition

to the basic switch standards:

1. IEC 61000-4-2 - EMC Testing and Measurement Techniques - Electrostatic Discharge

Immunity Test

2. IEC 61000-4-3 - EMC Testing and Measurement Techniques - Radio-frequency,

Electromagnetic Field Immunity Test

3. IEC 61000-4-4 - EMC Testing and Measurement Techniques - Electrical Fast Transient/Burst

Immunity Test

4. IEC 61000-4-5 - EMC Testing and Measurement Techniques - Surge Immunity Test

5. IEC 61000-4-6 - EMC Testing and Measurement Techniques - Immunity to Conducted

Disturbances, Induced by Radio-frequency Fields

6. IEC 61000-4-11 - EMC Testing and Measurement Techniques - Voltage Dips, Short

Interrupts and Voltage Variations Immunity Tests

7. CISPR11, Class B - Industrial, Scientific and Medical Radio-frequency Equipment -

Electromagnetic Disturbance Characteristics - Limits and Methods of Measurement 8. FCC

Part 15, Subpart B, Class B

2.03 ENCLOSURE

A. Transfer switch shall be provided in a NEMA 3R enclosure suitable for use in environments

indicated in the drawings.



B. NEMA 3R enclosure shall be painted with the manufacturer’s standard light gray paint.

2.04 CONTROLLER DISPLAY AND KEYPAD

A. The microprocessor-based controller display shall be UV resistant and include backlit display.

The controller shall be capable of displaying transfer switch status, V, Freq, A parameters, and

diagnostic data. All set point parameters shall be password protected and programmable using

the controller keypad, USB port, or remotely using serial port access. Limited abbreviations or

codes shall be used for transfer switch functions.

B. The microprocessor-based controller shall include a mimic bus display consisting of Four (4)

individual LED’s for indicating the following:

1. Availability status of source 1

2. Availability status of source 2

3. Connection status of source 1

4. Connection status of source 2

2.05 VOLTAGE AND FREQUENCY SENSING

A. The controller shall have a voltage range of 0-790 volts (50/60 Hz) with an accuracy of +/- 1% of

the reading and a frequency range of 40-70 Hz with an accuracy of +/- .3 Hz.

B. Voltage and frequency dropout and pickup parameters are set as a percentage of the nominal

voltage as indicated in the table below.

Setpoint Sources Dropout Pickup

Undervoltage Source1 and 2 70 – 97% (DO + 2%) - 99%

Overvoltage Source 1 and 2 102 – 116% 103% - (DO – 2%)

Underfrequency Source 1 and 2 85 – 95% (DO + 1Hz) – 99%

Overfrequency Source 1 and 2 101 – 111% 101% - (DO – 1Hz)

Voltage Unbalance Source 1 and 2 20% (UNBAL DO% - 2) – 7%

C. The normal and emergency sources shall include phase reversal protection. The preferred rotation

is programmable as ABC or CBA.

2.06 TIME DELAYS

A. A time delay shall be provided on transfer to source 2, adjustable from 0 to 60 minutes.

B. A time delay shall be provided to override a momentary power outage or voltage fluctuation,

adjustable from 0 to 6 seconds.

C. A time delay shall be provided on retransfer from source 2 to source 1, adjustable from 0 to 30

minutes.



D. A time delay shall be provided after retransfer that allows the generator to run unloaded prior to

shut-down, adjustable from 0 to 5 minutes.

E. A time delay shall be provided for engine failure to start, adjustable 0- 6 seconds.

F. A pre and or post transfer time delay output adjustable from 0-120 seconds. The contact shall be

a form-c contact rated for 10-Amp at 250-Vac and 10-Amp at 30-Vdc.

G. All delays shall be field adjustable from the microprocessor-based controller without the use of

special tools.

2.07 ADDITIONAL FEATURES

A. One Form C contact for closure of the source 1 generator start circuit for optional use with a dual

generator system. The contacts shall be rated for 5-Amp at 250-Vac and 5-Amp at 30-Vdc.

B. One Form C contact for closure of the source 2 generator start circuit. The contacts shall be rated

for 5-Amp at 250-Vac and 5-Amp at 30-Vdc.

C. The controller shall include two independently programmable Engine Exercisers, selectable as

disabled, 7, 14, or 28 day interval, or by calendar date. Run time shall be adjustable for 0-600

minutes, with or without load. Upon loss of source 2 power, the ATS shall automatically return

to source 1. Transfer time delays shall also be independently programmable for test events. D.

The controller shall include a keypad pushbutton to initiate a system test.

E. The controller shall include remote contacts to transfer emergency or normal.

F. The controller shall include relay outputs rated for 10-Amp at 250-Vac and 10Amp at 30-Vdc.

Each input can be user configured to one of the following features:

1. General Alarm indication for failure to transfer, mechanical fault, or electrical fault.

2. Pre and/or post transfer signal - A pre and or post transfer time delay output adjustable

from 0-120 seconds.

G. One Form C auxiliary contact to indicate Source 1 position and one Form C contact to indicate

source 2 position. The contacts shall be rated for 10-Amp, 1/3-Horsepower at 250-Vac and

10Amp at 30-Vdc.

H. One Form C contact for Source 1 Available. The contacts shall be rated for 10-Amp,

1/3Horsepower at 250-Vac and 10-Amp at 30-Vdc.

I. One Form C contact for Source 2 Available. The contacts shall be rated for 10-Amp,

1/3Horsepower at 250-Vac and 10-Amp at 30-Vdc.

J. Data Logging

1. Historical Data Storage to include:

a. Engine Run Time

b. Source 1 Available time

c. Source 2 Available time

d. Source 1 Connected time

e. Source 2 Connected time

f. Source 1 Engine Run Time

g. Source 2 Engine Run Time

h. Load Energized Time

i. Number of Transfers

2. Event Summary shall include up to 100 date and time stamped events. All metered values

are logged for each event. Event summaries include:



a. Transfer events

b. Alarms

c. Changes to the set points

d. Changes to the time/date

e. Resetting a historical counter

f. Engine Run test

3. Event Details shall include up to 300 date and time stamped events. All metered values are

logged for each event. Event details include detailed sequence of operations of a transfer

event.

PART 3 EXECUTION

3.01 INSTALLATION

A. Floor-Mounting Switch: Anchor to floor by bolting.

B. Concrete Bases: 4 inches (100 mm) high, reinforced, with chamfered edges. Extend base no

more than 4 inches (100 mm) in all directions beyond the maximum dimensions of switch,

unless otherwise indicated or unless required for seismic support. Construct concrete bases

according to Division 26 Section "Hangers and Supports for Electrical Systems."

C. Annunciator and Control Panel Mounting: Flush in wall, unless otherwise indicated.

D. Identify components according to Division 26 Section "Identification for Electrical Systems."

E. Set field-adjustable intervals and delays, relays, and engine exerciser clock.

3.02 CONNECTIONS

A Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical

Systems."

B Connect wiring according to Division 26 Section "Low-Voltage Electrical Power Conductors

and Cables."




B. Perform the following tests and inspections in conjunction with factory-authorized service

representative:



1. After installing equipment and after electrical circuitry has been energized, test for

compliance with requirements.

2. Perform each visual and mechanical inspection and electrical testing as outlined

below:

a. Measure insulation resistance phase-to-phase and phase-to-ground with insulation-

resistance tester. Include external annunciation and control circuits. Use test

voltages and procedure recommended by manufacturer. Comply with

manufacturer's specified minimum resistance.

1. Check for electrical continuity of circuits and for short circuits.

2. Inspect for physical damage, proper installation and connection, and

integrity of barriers, covers, and safety features.

3. Verify that manual transfer warnings are properly placed.

4. Perform manual transfer operation.

3. After energizing circuits, demonstrate interlocking sequence and operational function for

each switch at least three times.

a. Simulate power failures of normal source to automatic transfer switches and of

emergency source with normal source available.

b. Verify time-delay settings.

c. Verify pickup and dropout voltages by data readout or inspection of control

settings.

d. Verify proper sequence and correct timing of automatic engine starting, transfer

time delay, retransfer time delay on restoration of normal power, and engine

cooldown and shutdown.

C. Coordinate tests with tests of generator and run them concurrently.

D. Report results of tests and inspections in writing. Record adjustable relay settings and

measured insulation and time delays. Attach a label or tag to each tested component

indicating satisfactory completion of tests.

E. Remove and replace malfunctioning units and retest as specified above.

3.04 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to

adjust, operate, and maintain transfer switches and related equipment as specified below.

B. Coordinate this training with the generator equipment.