Cable twisting and bending

[sussexrich]

Hi - I'm installing 2.5 and 6 mm T&E in some fairly tight spaces, which may involve some 90 degree bends, as well as rotations about the long axis of the cable over a fairly short distance.

Obviously I will try to minimise the stress on the cable as much as possible, so I don't damage any of the conductors.

Can anyone offer some guidance please, as to how much cable bending and twisting is acceptable? Although I know it may be hard to be objective and precise!

I seem to remember seeing something about the minimum acceptable bending radius of a cable, if the cable were laying flat on a surface.

Thanks in advance.

 

[Taylortwocities]

I guess you are installing new circuits? these are supposed to be done in accordance with BS7671. The On Site Guide to BS7671 provides min bending radiuses for various sized cable.

If you havent got an OSG, this may give u a clue: http://www.tlc-direct.co.uk/Book/4.4.2.htm