None of the cables specified in to standards should be
bent during installation to a radius
smaller than that given below. So wherever possible,
larger installation radii should be used.
Type of
cable
Unarmored
Armored
Number of
cores
Single core
Multicore
300/500V and
600/1000V cable
8D
6D
10D
Where D: diameter of cable
Side wall pressure to cable
Permissible maximum side wall pressure to the cable at
bending point during installation is 500kg/m.
Side
wall Pulling tension (kgf)
Pressure = __________________
to cable Bending g radius (m)
Permissible maximum pulling tension (T)
Conductor ( Tension kgf )
Copper 7 x ( No. of cores ) x
(cross-sectional area of conductor)
Drum
handing
Handle the
drums with care! It is always recommended and
a must with heavy drums - to lift drums with a
fork-lift truck or a crane when removing them
from the vehicle. Always take care to lower t
drums into an upright position on their flanges.
Avoid
the cables, while installing from extra friction.
Try to lay the cables with good workmanship methods.
void the cables from rough edged surface, sharp
corners so to stay within minimum bending radius.
For
better assistance, you can use a little lubrication
on the cable surface.
Avoid
pulling / unwinding cables, while laying, with heavy
machining.