On 17/03/2019 13:12, John Rumm wrote:
On 17/03/2019 09:22, Kevin H wrote:

New kitchen planning underway. Looks like we're going to replace a
gas hob with an induction hob requiring a 32A connection back to the
CU (photo he https://goo.gl/CGJfg3)

The CU is pretty old (1995 when the house was built). There is a

It may be old(ish) but its a decent brand and appears to be in good
order. (although that non Mem/Eaton water heater MCB does not fit that
well, and leaves a larger than desirable gap in the facia)

spare position but on the non-RCD protected side. I assume using this
slot would not be acceptable practice?

You appear to already have a cooker circuit there with a 32A MCB on it.
Any reason why you are not using that?

If you use that then its a like for like swap of appliance, and you
don't need to meet new requirements for cable protection.

If you want a completely new circuit, then looking to see if there is a
RCBO that will fit that CU might be a more pragmatic answer. (especially
with the space afforded by removing the water heater MCB - so even a
double module RCBO would be ok).

(Another option for more RCD space would be to get a longer bus bar for
the RCD side, and shorted the non RCD side, so you move the split to the
right a bit - but the RCBO would be a better choice IMHO).

Sorry John but that's not going to work on the Memera 2000.

They are a fixed bus bar CU and that is not a spare way next to the main
switch but a deliberate unusable blank..

A single module RCBO might work.

Cheers


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Adam