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I have a light switch in my bathroom, within 2 feet of the bath, does anyone know if there is a reasonable (i don't want it to look industrial) waterproof switch or suitably IP rated one I could replace it with....or maybe a clear membrane I could fit over the switch to make it safe but useable?

There are many pre-1970 lighting circuits without earths. Is there anything that can be done to minimise the danger from them. EG plastic wall switches (instead of polished steel or brass). I gather RCDs are frowned upon for lighting circuits? How would they be reported on a periodic...

Someone in a forum (not particularly electrical) recently said that an RCD was mandatory if you have an electrical shower. I understand it is desireable and sensible but was not aware it was mandatory. Does this mean everyone with an electric shower needs to get it RCD protected? Would it...

If I'm fitting mains smoke detectors with battery back up can I just spur it off from a lighting circuit at a ceiling rose for each one, without any switching or fusing ?