On Sunday, 24 September 2017 08:36:44 UTC+1, wrote:
Thanks John

I checked the consumer unit. There is a bank of MCBs and then a RCCB then another bank and another RCCB. I assume the RCCB protects the bank of MCBs to the left of it. Is that correct? If so, the bank of MCBs to the left are...
2xB6
2xB16
2xB32
1xB40

The RCCB is 80A 30mA. 80a seems a bit odd given the total of the MCBs is much more. Unless it only protects the nearest 1 or 2 MCBs?

Thanks again for your help

Lee.

diversity


NT