Shower Installation 8kw to 8.5kw

Risteard · May 25, 2018

MDJ said:
can the 6mm2 cable cope with 40 amps?

It doesn't need to. It only needs to cope with the load. The 40A circuit breaker only needs to provide adequate fault protection.

telectrix · May 25, 2018

for 8.5kW, Ib= 36A, so unless the cable is covered in insulation, 6.0mm will be fine.

MDJ · May 25, 2018

Risteard said:
It doesn't need to. It only needs to cope with the load. The 40A circuit breaker only needs to provide adequate fault protection.

I know, but you were not supposed to say that, hence my post to the young sparks, now where is the "I'm angry an experienced spark has trashed my post emoji?"

MDJ · May 25, 2018

telectrix said:
for 8.5kW, Ib= 36A, so unless the cable is covered in insulation, 6.0mm will be fine.

Agreed, no problem at all, the only question now to the OP is "why isn't it already up on the wall?"

telectrix · May 25, 2018

Who mentioned The Wall?

Deleted account · May 28, 2018

Mikedry said:
Yes it does. Just not sure what the rating of the shower one is. A new board was put in about 5 years ago and I'm assuming all was ok for the 8kw shower we already have.

Assume! Not a good idea.

Did you get certification and building control notification when it was fitted?

If you did then I possibly would lean towards assumption everything is ok, but if it didn't I wouldn't.

Also it's had 5 years of deterioration.