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Sauna outside

goldenboy1818

Hi guys another question. New clients want a 9kw outside sauna put in place.

Initially the wanted a single plase 10mm supply but now are suggesting we need to fit a 3 phase supply to the sauna. 3 x 16amp supply and 4mm 5 core swa.

Does anyone have any experience of this ? Can you get a 3 pause 16amp rcbo ? The board is 3 phase but we never fit 3 phase breakers as its just standard houses.

Also its a pme system do you think id need to add a earth rod for safety here, maybe just an additional rod alongside normal earth set up ?

Thanks guys 

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  • 0 in reply to goldenboy1818

    how I can achieve no rcd

    SWA to the house, and then hard wired and obvious in the sauna room.. 

    Agree, seems a bit odd, but maybe they know their heaters are hygroscopic.

    If its a shed with an insulating floor , then a lot of the earthing concerns go away.
    If however the floor is cement or earth or something that gives a wet foot connection to terra-firma, then the earthing thing and the risk of tingles when stepping out onto the floor is going ot need consideration. (a PME earth may be a noticeable no of volts away from the garden terra-firma potential)

    M.,

  • 0 in reply to mapj1

    Its still requires rcd for the other sauna circuits so may be a pain to do this

    Normally they are a all wooden building 

  • 0 in reply to goldenboy1818

    703.411.3.3 says it all.

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