Cable bend

sparkyy · Apr 24, 2011

Almost sure this is ok but just want to check the bend in the cable is ok? ie not bent at to much of an angle its 6.0mm for a cooker thanks.

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Engineer54 · Apr 24, 2011

Can't see any problem with the cable bending radius there !!!

Paul.M · Apr 24, 2011

The bend of any cable can not be any greater than 4 times its width. Meaning if you cut four short pieces of the same cable and put them side to side with the vertica/horizontal cable, the fourth section of cable should be still on part of the bend. (if that makes sense)

sparkyy · Apr 24, 2011

paul.m said:
The bend of any cable can not be any greater than 4 times its width. Meaning if you cut four short pieces of the same cable and put them side to side with the vertica/horizontal cable, the fourth section of cable should be still on part of the bend. (if that makes sense)

If I done it correct only 2 pieces of cable are in the bend and looks impossible to get 4 in the bend in that trunking? thanks

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Paul.M · Apr 24, 2011

I wouldn't worry too much, it looks ok to me using common sense. My quote is from the regs, interpreting the regs is down to us. If no damage to the cable has been done I can't see a problem with it (in the real world).

sparkyy · Apr 24, 2011

Ok cheers mate great help.

Paul.M · Apr 24, 2011

Acceptable

Not acceptable

It's more of a guild line so not to over stretch the conduit therefore not reducing the csa and then it becoming a weak point of the cable.

If anyone did a resistance test on your 6mm before and after installation, I bet there would not be any difference. Besides you can't do much more than to increase the trunking for the size of the bend, forget that.

sparkyy · Apr 24, 2011

The acceptable pic looks like you would never get that bend in a 90 degree bend in trunking,

So just leave it as it is and forget about it? I tend to worry about the smallest things.