© 2011 Ericson Manufacturing, Willoughby, Ohio 44094

ERICSON MANUFACTURING TRAINING MODULES

TEMP POWER BASICS

PART 1 of 2Modules A, B & C

© 2011 Ericson Manufacturing, Willoughby, Ohio 44094

MODULE A

BASIC INFORMATION

ABOUT

TEMP POWER

MODULE B

Selecting the

RIGHT

TEMP POWER

MODULE C

The 5 Easy Steps to selecting

TEMP POWER PRODUCTS

Temp Power

Temporary Power Products are any devices used to control electrical energy for short term durations and are not part of a building’s PERMANENT Electrical system.

These devices can include: Electrical Extension Cords, Electrical “Panels”, Electrical Voltage Transformers and a variety of connection electrical devices.

Temp Power

Power blockInput-Primary-Line

Output-Secondary-Load• Transforms

• Distributes

• or Both

Temporary Power Product

Temp Power

voltage “the size of the power”

600, 480, 277 240, 208, 120 volts

Temp Power

voltage “the size of the power”

amperage “the force of the power”

600, 480, 277 240, 208, 120 volts

15 to 400 amps

Temp Power

voltage “the size of the power”

amperage “the force of the power”

phase “the pipelines of the power”

600, 480, 277 240, 208, 120 volts

15 to 400 amps

1 phase 3 phase

Temp Power

voltage

“the size of the power”

Tools, motors, pumps, light bulbs, switches,

fuses, circuit breakers are all rated or DESIGNED

to operate at a given voltage or range of voltages

Household

Mostly 120VAC

Some 240VAC

Automobile

12 VDC

AC vs DC Voltage

AC or Alternating Current is generator created.

DC or Direct Current is created by Battery or AC/DC power supply.

Jobsite

600 or 480 VAC

208 or 240 VAC

Temp Power

Household

100 Watt Light bulb – 1.5 amps

Electric Range – 50 amps

Jobsite

Drill or grinder – 5 to 18 amps

Stringlight – 10 to 18 amps

amperage “the force of the power” Symbol = A

Motors to light bulbs require or PULL a certain amount of amps through the cord.

Amps are added on a circuit and called the “load”.

Temp Power

phase “the pipelines of the power” Symbol = ø

The basic count of hot lines in a single circuit.

1 Phase 120V = 1 Hot , 1 neutral & 1 safety ground

1 Phase 240V = 2 Hots, 1 neutral & 1 safety ground

3 Phase 208V = 3 Hots, 1 neutral & 1 safety ground

3 Phase 480V = 3 hots & 1 Neutral/Ground Bonded

Temp Power

Electric circuits require a hot and return (neutral) side to complete the circuit or loop.

Hot +

Neutral Return -Source

Temp Power

Rule: Electric wires (conductors) are sized or rated to carry a maximum amperage or current.

Amp chart is NEC 400 – wire sizing

#14 awg = 15 amps#12 awg = 20 amps#10 awg = 30 amps# 6 awg = 50 amps

Note: Wire “size” goes down as physical wire gets larger and can carry more amps

Temp Power

Rule: Too much current ( amps ) can burn up circuits – fire hazard.

Protection – Circuit Breakers & GFCI

VoltageSource

Wire size too small

Temp Power

Rule: Too much current ( amps ) can burn up circuits – fire hazard.

Protection – Circuit Breakers & GFCI

Circuit Breaker or Fuse

PROTECTS the equipment or wiring

CLICKVoltageSource

Temp Power

Rule: Too much current ( amps ) can burn up circuits – fire hazard.

Protection – Circuit Breakers & GFCI

Circuit Breaker or Fuse

PROTECTS the equipment or wiring

CLICKVoltageSource

CODE RULE:

Circuit Breakers or Fuses must be rated for the smallest rated part of the circuit.

Temp Power

Protection

Circuit Breakers protect equipment and wiring.

- NOT a life safety device!- Rated in full amps ( 15, 20, 30, 50 etc)- Must be on all branch circuits- Must be rated correctly- Does not do the same job as a GFCI

Temp Power

Protection

GFCIs protect people.

-Ground Fault Circuit Interrupter

- Quick life saving device- Sensitive to poor connections, cheap cordage, moisture

Temp Power

Protection

Circuit Breakers protect equipment and wiring.

- Not a life safety device- Rated in full amps ( 15, 20, 30, 50 etc)

GFCIs protect people.

- 6 ma trip point ( 6 millionth of an amp)- Quick life saving device- Sensitive to poor connections, cheap cordage, moisture

Temp Power

Rule: Electrical current will find any path to ground – Including through you!

Protection - Circuit Breaker ONLY

VoltageSource

Circuit Breaker

H

N

Ground

Electric current flows to and from tool as normal…

Temp Power

Rule: Electrical current will find any path to ground – Including through you!

Protection - Circuit Breaker ONLY

VoltageSource

Circuit Breaker

H

N

Ground PROBLEM !

TOOL DEVELOPS AN ELECTRIC FAULT and SENDS ENERGY THROUGH THE WORKER TO GROUND !

Temp Power

Rule: Electrical current will find any path to ground – Including through you!

Protection - add a GFCI

GFCIs watch for a mis-match in current on the Hot and Neutral

conductors.

CLICKVoltageSource

CODE RULE:

GFCIs are required for all 15, 20 and 30 amps 120V rated circuits on jobsites.

GFCI

Circuit Breaker

H

N

Ground

Temp Power

Transform vs Distribution

Distribution – “Splitting Phases”

Temp Power

Temp Power

Temp Power

Temp Power

Transform vs Distribution

Transforming Power

480 or 600 volts is available at site.

Tools can’t run on “commercial power” levels.

The voltage requires transforming to reach 240, 208 or 120 volt ranges.

Temp Power

Power block

Input• 1510-P• 120V• 15 amps• 1 phase

Output• 1610-C• 120V• 15 amps• 1 Phase

Distribute only

Temp Power

Power block

Input• 1510-P• 120V• 15 amps• 1 phase

Output• 1610-C• 120V• 15 amps• 1 Phase

Cordset

Distribute only

Temp Power

Power block

Input• 240 Volts• 1 Phase• 50 Amps

Output• 120 Volts• 1 phase• 6 circuits @ 20 amps each

•Distributes

Oscar

Temp Power

Power block

Input• 240V• 1 Phase• 50Amps

Output•120V•1 phase•6 circuits @ 20 amps each

•Distributes

Oscar®

Temp Power

Power block

Input• 208V• 3 Phase• 200 Amps

Output• 120V• 1 phase• 18 circuits @ 20 amps each

•Distributes

Temp Power

Power block

Input• 208V• 3 Phase• 200 Amps

Output• 120V• 1 phase• 18 circuits @ 20 amps each

•Distributes

Temp Power

Jobsite Problem:

How do you run a tool rated at 120 Volts if only 480 Volts are available?

Answer: Transform the power to 120V.

Transformers either step up or step down voltage based on the design.

Temp Power

Input• 480V• 3 Phase• 60 Amps

Output•120/208V•3 phase•(18) 1 phase circuits @ 20 amps each

Transform section

Distributionsection

Temp Power

Basic Rule:

3 Phase input into a transformer derives 3 phase output. 1 Phase input derives 1 phase output.

480V 3 phase INPUT = 120/208V 3 phase OUTPUT

480V 1 phase INPUT = 240V 1 Phase OUTPUT

Temp Power

Size Matters:

Transformers are rated in KVA – this is the size rating as to the amount of amps they can produce.

Every 15 KVA = Max of (6) 20 amp 120 V circuits

Temp Power

How to determine the right Temp Power Product

Step 1 – Determine the NEED ( Distribute or Transform)

Step 2 – Determine the AVAILABLE POWER- Volts Amps Phase

Step 3 – Determine the EXPECTED ELECTRICAL OUTPUT

Temp Power How to determine - con’t

Step 4 – Determine the CONNECTIONS How will they connect in and out

Be specificUse NEMA valuesVolts amps phase

Step 5 – Determine the BUDGET

Distribute Point to Point Only

Distribute Multiple Taps

Cordsets

“Y” “W” Power Stringers

Distribute with GFCI Protection

GFCI 1060

Distribute / Split Phases / GFCI Protection

6000 7000 8000 Series

Distribute / High Power ( 480 or 600 V )

Oscars Gen Cords Big-E Jr

Big-E

480V Big-E600V Big-E

Transform / Distribute / GFCI Protect

e-Cart Jr. e-Cart

END OF SESSION