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Domestic upgrade to 3 phase...

D4G

Hi All 

I have a customer that is upgrading his supply to 3 phase. Not entirely sure why but wants a 22kW EVCP.

He currently has a single phase supply feeding 2 consumer units which are under the stairs.

He is looking to get the 3 phase supply to the side of the property and requires connection to the existing wiring.

I do a lot of industrial 3 phase work but not domestic!

My idea is to run a suitable cable from the new supply to under the stairs and fit a 3 phase cu to pick up the existing wiring. 

Should I be making any efforts to balance out the load on the supply?

Could the 3 phase supply just be split and feed the existing consumer units??

Thanks in advance Grinning

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  • 0

    What size M.C.Bs would you use for the two existing consumer units from the new proposed three phase board?

    Or preferably not an MCB at all, but something that might discriminate with the downstream devices in the CUs - HBC fuse or certain types of MCCB perhaps.

       - Andy.

  • 0 in reply to AJJewsbury

    Wouldn't say, a C63 M.C.B. suit, installed in the new three phase board to supply a single phase consumer unit?

    Z.

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  • 0 in reply to AJJewsbury

    Wouldn't say, a C63 M.C.B. suit, installed in the new three phase board to supply a single phase consumer unit?

    Z.

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