MATERIAL TO BE USED:-
Power Cables are of stranded cu conductor multicore XLPE insulated PVC sheathed feeder cables 0.6/lKV of 90°C temperature manufactured by Jeddah Cables.
Telephone wires and cables 2 and 12 paired are multi paired indoor type solid plain copper conductor 0.6 mm dia PVC insulated and shielded, manufactured by Amaco cables.
Intercom wires are 3 pair, PVC insulated and unshielded type manufactured by General cables.
TV wires used are RG-6 and R6 – 1 1 coaxial cables, PVC insulated ,PVC sheathed.
EQUIPMENT AND TOOLS:-
1. Pull wires 30 mts 3.5mm flat
2. Locally made mandrel test kit
3. Nylon Rope size 8mm dia
4. Pull wire of 2mm dia solid steel galvanized wire.
Preparation:-
1. Following site delivery wires and cables are stored in dry areas and protected from weather ,fumes, water.
2. All under ground power ,telephone. TV and power and Intercom conduits are mandrel tested to check and clear any blockage.
3. All telephone, intercom, TV and power conduits are freed of burrs and cleaned and dried.
4. Conduits in concrete slabs, block walls are installed with 2mm dia. solid Galvanized steel wires to check the conduits are free of any blockage and retained in empty conduits with wooden blocks fastened at the end.
5. Post mandrel testing Nylon rope ,2mm dia galvanized steel wire is installed in all under ground power and other conduits respectively and retained.
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INSTALLATTONS:-
Using the pre installed galvanized steel pull wire approved sizes of TV, Telephone and intercom wiring is installed in the respective conduiting.
Power cables are pulled using already installed Nylon rope in the power conduits.
3M lubricants are used for pulling wires or cables if the character of pull would otherwise damage conductors insulation or jacket
At outlets, a slack of 200mm extra wire is left and at every pull box extra length of 250 mm is left for device terminations
Tagging is done for cables and all wires in pull boxes panel boards, outlet box, as a guide for making connections.
Post pulling the ends of conductors and cables are wrapped with insulation tape, capped and kept in respective device back boxes, panel enclosures and safely protected.
Testing :-
Visual inspection is conducted for workmanship Megger test is carried for cables and wires Insulation debris if any is cleaned.
