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Domestic Power Wiring - Upstairs & Downstairs

I have surveyed a house and have observed a domestic ring circuit which is serves a floor area exceeding 100m2, including upstairs, downstairs and utility containing (washing machine and tumble dryer) (kitchen ring is separate). I am ok with this circuit contravening the 100m2 guidance, and not being respective to the load of the whitegoods, but I understand there is guidance on a domestic ring only covering a single level.

Can somebody point me towards this guidance either in published Guidance Notes or the Regulations.

Thanks

Slight smile

Parents
  • It used to be considered good practice to split the layout vertically rather than horizontally, so that two ring circuits both supplied upstairs and downstairs, so if a circuit MCB tripped half the sockets remained working on both floors.

  • Absolutely right. I still do it like this now. If there is a problem with one circuit you still have power on both floors so no extension leads up the stairs. It also uses considerably less cable.

    Gary

  • I appreciate that its good practice to do this. The question is whether there is any publish guidance to suggest this "good practice", in particular BS7671, IET Guidance Notes, NICEIC, Napit etc.

Reply
  • I appreciate that its good practice to do this. The question is whether there is any publish guidance to suggest this "good practice", in particular BS7671, IET Guidance Notes, NICEIC, Napit etc.

Children
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