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

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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)


Scouser and Proud of It
Respected Member
that max. 12m may refer to 6mm. can't see a problem with 10mm. have you calculated the VD?


Respected Member
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


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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