Shower Electrics

[capn_slow]

I'm replacing my 9.5kW electric shower with a 10.5kW. Just wanted to check the electrics. The MCB is a 32A (installed by previous owner) so I know I'll need to up that to 45A. There is no RCD on the circuit at the moment - so that will need added too. The cable is 10mm which I think is OK for the new unit. The cable run is about 17m to the isolator switch but I haven't traced it to see exactly where it's routed. Do I need to check this or should the 10mm cable be OK? Is there anything else I need to check? Thanks.

 

[luminaire]

Does the cable go through any insulation?
If not it should be OK?
As regards RCD protection can you check with your CU's manufacturer if you could fit a 45A SP RCBO?

Also check that you have supplementary bonding.

I take you realise this work is notifiable!

 

[capn_slow]

Thanks for the reply. The cable runs through some loft insulation, but only for a couple of meters. Doesn't look like there's any supplementary bonding either. If I replace the shower with another 9.5kW one, I take it there's no need to notify?

CU is MK Sentry 5679s but doesn't look like there would be room to fit an RCBO.

 

[333rocky333]

The sentry mcb was the same size as the rcbo, One module

If you can still get one

I think the merlin gerin c60 range may be the same pattern, dont know if they do a 45 a though