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Hi, I have a redundant door bell in my hall. I want to install an tablet with wall mount directly underneath it and wondered if it was okay to use the bell wire (assuming its 24VAC) to carry 24VDC which will then be converted behind the tablet using a 24VDC to 5VDC buck converter to power the...

Yeah, apologies for that, but thanks for the info, much appreciated.

That great, thanks for the quick response. I've just checked the switches again and yes, there are earth wires, on switch 3 (plastic cover) they are to the back box and Switch 1/2 (metal) they go to the cover. Whilst I was checking I noticed a mistake in my diagram. The switch 2 appears to...

Happy New Year all, 1st question from a DIY'er so please go easy. I've just moved into a new house and want to update the lighting in one of the rooms which previously had wall mounted lights (now filed in a plastered over apparently) and ceiling lights with a strange 3 switch setup...