Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, about the refurbishment of bathrooms and whether bathroom lighting circuits need RCD protection, is answered by SELECT:
We are replacing the bathroom light fitting and he has indicated that he has to protect the lighting circuit with an RCBO to comply with the 17th Edition. Also if there is an electric heater sited in the bathroom this also will have to be upgraded to RCBO protection.
Could you confirm that this is a requirement?
Answer: If the only work you are carrying out is the replacement of the light fitting, I would recommend that you provide RCD protection for the lighting circuit. You would not, in my opinion, be required to provide RCD protection for other circuits within the bathroom, although this could be commented on in any certification provided.
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