Hi all. I'm new here and after some help please...
I'm currently wiring an old house as complete renovation progresses. The house is to be divided into two some time in the distant future, so two separate consumer units are being fitted. But, for now, there is to be just one (existing) 100amp supply to the property. I have wired the first 'half' of the house and need advise on the best way to run a submain to the next CU. The client does not wish to use SWA prefering not to have cables visible. Therefore, I'm considering running 10mm twin/earth through the floor structure of the building. I realise that this will need to be RCD'd but need advice on the best way to do this. Could the submain be run from a 40amp 30ma RCBO in the first consumer unit or does it need double pole isolation as well? I realise that there will be no discrimination from the CU at the other end of the submain but not sure there's anything I can do about this!
This is a TT system, and the demand is very low. No showers or electric heating. All energy efficient lighting. I am sure that the 100amp supply is sufficient for the two installations.
Any advise much appreciated
I'm currently wiring an old house as complete renovation progresses. The house is to be divided into two some time in the distant future, so two separate consumer units are being fitted. But, for now, there is to be just one (existing) 100amp supply to the property. I have wired the first 'half' of the house and need advise on the best way to run a submain to the next CU. The client does not wish to use SWA prefering not to have cables visible. Therefore, I'm considering running 10mm twin/earth through the floor structure of the building. I realise that this will need to be RCD'd but need advice on the best way to do this. Could the submain be run from a 40amp 30ma RCBO in the first consumer unit or does it need double pole isolation as well? I realise that there will be no discrimination from the CU at the other end of the submain but not sure there's anything I can do about this!
This is a TT system, and the demand is very low. No showers or electric heating. All energy efficient lighting. I am sure that the 100amp supply is sufficient for the two installations.
Any advise much appreciated
