Extending downstairs ring main into conservatory

27 Apr 2006
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United Kingdom
Hello all. Hope you can help.

Just had a conservatory installed. I have installed four double sockets and have run the cable into the house to extend the downstairs socket ring main. (2.5mm T&E).

Is it OK to simply extend the ring main or does conservatory wiring require a RCD?

Please try and keep the answers simple!!
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conservatory wiring does not require an RCD, unless it "can be reasonably expected to provide power to equipment outside the equipotential zone (OUTSIDE, to you and I)"

In other words, if the existing ring main is not RCD protected, it would probably be wise to get an electrician to provide one for the whole circuit.
That answers my question. Thanks very much. I'll keep on the safer side and get one fitted.
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Or replace the circuit mcb for an rcbo (if it's not an older cu), or install rcd socket outlets in the conservatory (gets round the regs but not in the spirit of the regs).
But as said the ideal solution is to get the whole circuit rcd/rcbo protected.

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