Thread: No earth to light switch, so sinking a plastic surface back box in awall?
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ARW ARW is offline
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Default No earth to light switch, so sinking a plastic surface back boxin a wall?
On 20/01/2019 18:40, wrote:

I don't think it will be fully RCBO because there are lots of circuits
and (when I last looked) RCBOs are still quite expensive. Ref earlier
discussions, several things can be combined onto a single RCD so there
will be a mix of RCBOs and RCD+(n)MCBs.


Indeed.

A mixture of RCBOs and some RCD shared circuits is quite a good option
in many cases.

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Adam
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