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Discuss Max run for 10.5 kw shower cable in the Electrical Wiring, Theories and Regulations area at

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  1. sidekick

    sidekick Regular EF Member

    If 10.5 kw shower installed on 10mm t/e and 45a MCB over 15m, is it likely to have any problem as shower leaflet states max 12m run? Cable clipped direct with the exception of 2.5m running through some pipe boxing (containing hot water pipe)
  2. telectrix

    telectrix Scouser and Proud of It Respected Member

    Business Name:
    that max. 12m may refer to 6mm. can't see a problem with 10mm. have you calculated the VD?
  3. sidekick

    sidekick Regular EF Member

    just under 3v
  4. sidekick

    sidekick Regular EF Member

    should any adjustment be made for the 2.5m going through the pipe box with hot pipe?
  5. Andy78

    Andy78 Forum Mentor

    Kingston upon Hull
    This would be the area of most concern with me. How close are the pipe and the cable ? is the pipe lagged ? what's the ambient temp of the area ? etc
    • Like Like x 1
  6. wallyanker

    wallyanker Guest

    I know its border line but 10.5kw could potentially draw 45.7a. Maybe change the mcb to a 50a.

    10mm cable is suitable for this job
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