RAJASTHAN CO-OPERATIVE DAIRY FEDERATION LIMITED

42.0 Cable Installation :
57
42.1 Erector shall install, test and commission the suitable cables. Cables shall be
laid directly buried in earth on cable racks, in built up trenches, on cable trays
and supports, in conduits, and ducts or bare on walls, ceiling etc. as follows :
a) Outside the building premises :
The scope of installation of underground cables includes digging necessary
trenches, laying of the cables in the trench, covering them with sand and
bricks and then refilling the trenches. Necessary cable markers at
appropriate points to indicate the path of under ground cable should also be
supplied and installed by the erector.
b) With in the building :
Under ground cables will be laid in GI light duty class pipes of not less
than 37 mm. dia.
c) Cables above ground :
Cables above the ground shall be fixed either on wall or in cable trays of
slotted angle with necessary clamps, bolts etc. as directed by RCDF.
d) The main cables inside the building should be laid in hume pipes wherever
provided by RCDF. At the places where hume pipes have not provided the
main cables shall be laid as per 40.1 (c).
42.2 Installation and testing of proper insulated cables shall be in accordance with
Indian Standard Code of Practice IS:1255.
42.3 Inspection on receipt unloading, storage and handling of cables shall be in
accordance with IS:1255 and other Indian Standards Code of Practice.
42.4 Sharp bending and kinking of cables shall be avoided. The bending radius for
various types of cables shall not be less than those specified below unless
specifically approved by the Site Engineer of RCDF.
Type of Cable
Minimum bending radius
Voltage grade Single Multi Core
Core Unarmoured Armoured
Paper insulated upto 11 kv 25 D* 20 D 15 D
Paper insulated upto 22 kv 32 D 25 D 20 D
Paper insulated upto 33 kv 38 D 32 D 25 D
(Signed & sealed by the tenderer
in token of acceptance of above)
(RCDF)
Jaipur