PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Cable Accessories:
All accessories like cable glands, lugs and terminal markings etc. shall be used
conforming to relevant standards / as specified. For 1100V grade cables Siemens
type gland and crimping type lugs shall be used.
Cable Laying:
The power cables and its accessories shall confirm to latest relevant Indian
Standards. While laying the cables care shall be taken to avoid formation of kinks
and damages to the cables.
LT cable shall be laid on wall with suitable clapping or trays or buried underground
with appropriate protection. Black shall indicate the neutral, while red, yellow and
blue for three different phases. All LT cables when laid on the cable racks shall be
properly dressed and clamped as required without crisscrossing and unnecessary
overlapping. Cables shall be properly dressed and clamped.
Laying of LT under ground cables :
The laying of UG cables on ground is by excavating a trench of 0.75 meter depth
for LT cable. Before the cable is laid in the trench, the bottom of the trench shall be
cleared from stones and other sharp materials and filled with sand layer of 150 mm.
The width of the trench at bottom shall be 0.4 meters for one cable. In case the total
number of cables laid in trenches is more than one, then the width shall be such that
the spacing between cables is not less than 150 mm. Each run of cable shall be
protected by placing bricks/RCC slabs on both the sides and top.
After placing bricks or RCC slabs, the trench shall be filled with the excavated soil,
in layers ensuring that each layer is well rammed by spraying water and
consolidated. The extra earth shall be removed from the trench and disposed as
directed.
When cables pass through roads they must be well protected by either hume pipes
or GI pipes of suitable dimensions properly sealed at either end and also at the
joints with suitable compound to avoid entry of soil and water.
GTS : General Technical Specification. Page 116