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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
    D4G said:
    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. 

    You haven't said anything about the route: it could be straight through the wall, or it could be quite lengthy. Will the EVCP be adjacent to the new intake or elsewhere?

    Squeezing in a 3-phase board under the stairs might be quite a struggle and it seems rather a waste for one 3-phase plus 2 single-phase distribution circuits.

    At the moment, I don't feel that we have sufficient information to provide useful suggestions.

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  • 0
    D4G said:
    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. 

    You haven't said anything about the route: it could be straight through the wall, or it could be quite lengthy. Will the EVCP be adjacent to the new intake or elsewhere?

    Squeezing in a 3-phase board under the stairs might be quite a struggle and it seems rather a waste for one 3-phase plus 2 single-phase distribution circuits.

    At the moment, I don't feel that we have sufficient information to provide useful suggestions.

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