SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
SCOPE OF WORK (ELECTRICAL) - CIDCO Maharashtra Ltd.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>CIDCO</strong> <strong>OF</strong> MAHARASHTRA LTD<br />
C.A.No.03/<strong>CIDCO</strong>/EE(Elect)/2011-12 Sr. Page No.<br />
30 m of its underground length with atleast one tag at each end before<br />
the cable enters the ground. In unpaved areas, cable trenches shall be<br />
identified by means of markers as per standard drawing. These posts<br />
shall be placed at location of changers in the direction of cables and at<br />
intervals of not more than 30 m and at cable joint locations.<br />
4.7 All temporary ends of cables must be protected against dirt and moisture<br />
to prevent damage to the insulation. For this purpose, ends of all PVC<br />
insulated cables shall be taped with an approved PVC or rubber insulating<br />
tape. Use of friction type or other fabric type tape is not permitted. Lead<br />
sheathed cables shall be plumbed with lead olloy.<br />
4.8 RCC cable trenches with insert plates shall be provided by the contractor.<br />
Cable shall be laid in 3 to 4 tiers in these trenches.<br />
4.9 Directly buried cables shall be laid underground in excavated cable<br />
trenches where specified and layout drawings. Trenches shall be of<br />
minimum 0.9 mtr. depth and suitable width for accommodation of all<br />
cables correctly spaced and arranged with a view of heat dissipation and<br />
economy of design. Depth of burying shall allow minimum 900 mm soil<br />
cover for low voltage and 1000 mm for 11KV cables.<br />
L.T. cables shall be laid in trenches as above stated depth. Before cables<br />
are placed, the trenches bottom shall be filled with layer of sand. This<br />
sand shall be leveled and the cables laid over it. The cables shall be<br />
covered with 150 mm of sand on top of the largest diameter cable and<br />
sand shall be lightly pressed. A protective covering of 75 mm thick<br />
second class red bricks shall then be laid flat. The remainder of the<br />
trench shall then be back-filled with soil, rammed and leveled.