ueeneef102a telecommunications installation practice presentation part 3

Telecommunications Installation Practice

UEENEEF102A

References

TS 008:2006TS 009:2006Telecommunications Cabling Provider Rules 2000AS/NZS 3080:2003HB 243-2007 Module 1 Australian regulatory arrangementsHB 29-2007 Module 2 Communications cabling handbookHB 252-2007 Module 3 Residential communications cabling handbookHampson Electrical Trade Principles Section 11Hampson Electro technology Practice

Telecommunications Cables Types Indoor Cabling

Outdoor Cable

Twisted pair data cable

Optical Fibres

Coaxial Cable

Cable Identification

Minimum Requirement TS008:2005 Rule 5 - Pg 13

Distributor Records Hampson Pg 485

Plans and Drawing Hampson Pg 487 for symbols

Cabling colour code Hampson Pg 501 and TS008:2006 Pg 38

Cable installation

Cables can incur damage from:-

pulling the cable too hardallowing the cable to stretch under its own

weightbending the cable too sharply around cornerskinking the cablestwisting the cabledragging the cable over rough or sharp objectscrushing the cablewater entering the cable

Terminations

Care must be taken when terminating cables. At this time cable degradation can occur from:-

nicks and cuts to the cable sheathnicks or cuts to the wire insulationnicks in the conductorburning the wire insulation

The separation distance of telecommunication cable and electrical cable is to prevent the accidental contact to the LV electrical conductors and terminations by telecommunication persons working on the customer cable conductors and terminations.

See TS009:2006 rule 9.1.2.2 Pg 37.

Cable Dispensers Cables are usually in one of four packages:-

plastic bagbox (usually 305 m or 500 m)spool(usually 100 m)drum(100 m, 500 m or 1000 m)

Mechanical dispensing aids are available to minimise personal injury when installing cables.

Building Construction

Structures

Brick veneer constructionCavity brick constructionTimber frame with external linings

Roofing Types

• Hip and Valley• Skillion• Gable• Box Gable• Dutch Gable

Stages of Construction• Setting out• Drainer, foundation trenches, temporary power pole and /or meter box position,

underground conduit• Foundation poured• Slab, thickening beam (heating systems or cables may have to be installed) poured or

bearers, joists and flooring erected• Wall frames erected• Roof framing, fascia and barge boards fitted• Roof tiled or sheeted• Windows and external doors installed• External linings erected• Soffits fitted• Plumbing installed• Electrical fit out (rough in or first fix)• Ceiling and walls lined and cornice fitted• Bath, shower, WCs and kitchen installed• Doors , architraves and skirting fitted• Plumbing finished off• Painting• Electrical finished off, or second fix

FixingsThere are many different types of fixings.

Wall plugs are used for inserting screws into brickwork etc.

The type of screw used depends on the use it is going to have.

Hardened screws. Prodrive head recess gives extra grip. Black oxide finish. Use with chipboard

Roundhead, slotted brass screws. Provides a decorative finish with furniture, sanitary ware and brass fittings.

Corrosion resistant steel screws. Prodrive head recess gives extra grip. Use for decking and other external timber applications.

Zinc plated, slotted screws with chrome cap. Use for fixing wall mirrors in place.

Rawlbolts Rawlbolts are used where fixing of more strength are required,

Particularly used in concrete.

The rawlbolt expands as it is tightened

Fixings for Hollow Walls etcThere are several types of fixing for ceiling etc where a screws are not appropriate.

The butterfly clip is made from a hinged joint with a bolt running through it.

The interset clip has a sleeve, which is inserted into the wall. Both of these fixings are only as strong as the wall etc to which it is fixed.

Cable enclosures AS/ACIF TS008:2006, clause 4.2.20 defines an enclosure as a housing or covering for cables or equipment providing an appropriate degree of protection against external influences or end-user contact with hazardous voltages, extra-low voltage (ELV) or telecommunications network voltage

AS/ACIF TS009:2006, clause 8.1 requires telecommunications cabling to be supported or secured at suitable intervals to ensure the safe passage of persons, to maintain separation from hazardous services and to comply with the instruction provided by the cable manufacturer. AS/ACIF TS009:2006, clause 8.6 requires the removal of sharp edges from the cable-bearing surface of conduits, trays and trunking.