3 Execution
3.1 Installation
3.1.1 In general, the Power cables shall be run in condults, In cable tray and shall be run
concealed in celling, floor, and wall or as indicated on the Drawings.
3.1.2 No wire shall be pulled into the condult system util it is complete in all details.
3.1.3 Lubricant shall be used to facilitate wire pulling. Lubricants shall be approved
for using with the insulation specified.
3.1.4 Splicing of cable wires shall be allowed only in the luminaries, receptacles and
proper junction box with an approved method of insulation. No splice shall be
made in conductors for instrument circuits or control circuits.
3.1.5 Splicing of large wires and cables shall be done by compression type, solder-less
wire connectors indented by special hydraulic tool. The splice shall be insulated
with plastic insulation tape such as Scotch brand No.35. Thickness of the tape shall
not be less than three layers or at least the same thickness as the wire insulation
3.1.6 Compression type, soderiess lugs indented by proper tool shall be used at the end
of all wires and cables and shall be connected to the screw type terminals of the
equipment and to the bus bars.
3.1.7 The cut end of cables shall be treated to prevent seepage of water into the cable
Special care shall be taken to prevent damage to the cables when unreeling cable
from the cable drums. When removing the cover of the drum, care shall be taken
to prevent damage to the cable sheath.
3.1.8 The Contractor shall provide all necessary materials for insulation of the cable,
such as grounding lead wires, compression type terminals, metal fitting, bolts and
nuts including cable indentivication and felt packing to be inserted between cable
and cleats.
3.1.9 The unoccupied space in cable knockouts and condults after cable insertion shall
be filled, with duct seal to prevent small animals from entering the equipment
housing
3.1.10 Where cables are buried in the ground, the minimum depth of burial shall be 0.6 m
Cables shall be laid on 0.15 m and cover by a 7.5 cm. layer of clean sand
Cables shall be covered with tiles and or making tape and backfilled to grade level.
3.1.11 Cables under roads shall be enclosed in ducts supplied and installed by the
electrical work.
3.1.12 Cables shall be indentified by means of cable outfitted
and at 30 meter intervals along cable route
3.1.13 Cable route markers shall be installed abouve ground alond underground cable
routes. These shall be located at 30 meter inter-intervals, at
and at entries to buildings.
3.1.14 The Contractor shall be responsible for the supervision or extravation , sanding
and backfilling, supply and installation to warning tape, cable tiles and cable marker
posts as detailed on the Drawings and in these Specifications.