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Discuss Extension Consumer Unit in the Industrial Electrician Talk area at ElectriciansForums.net

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smithdarr

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Hi,

I'm after a bit of advice on fitting a consumer unit to new extension. The existing house C.U is a 6 way Wylex 100A (non-RCD protected with 2 rings and 2 lighting circuits) with two spare ways. I was hoping to use a 63A MCB in one of the spare ways to feed a new C.U(via earthed metal conduit) in the extension which is to be a kitchen/Diner. From the new C.U I am feeding a cooker circuit, ring, lighting x2, heat/smoke detectors and a feed to a shed. However, it seems you can only get a maximum 40A mcbs for single phase boards and I would presume, even with diversity applied this wouldn'nt be large enough to feed a seperate C.U with a cooker circuit and ring etc. I was looking to use a dual 63a RCD board in the extension and the reason that I'm not just replacing the old C.U is that its current location is not very accessible.
P.s There is 63A RCD shower enclosure fed from supply side of the existing C.U.
Any suggestions of a better way of going about this would be much.appreciated.
Cheers.
 
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smithdarr

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