You could offer to fit one of those fancy wireless doorbells which play a tune, then explain that if she hears any doorbell other than the chosen tune she should make a note of the time and then ignore it. Offer to call her in a couple of months to see how it's going.
Auditory hallucinations...
Why is it urgent? What was the original job?
Wiring is pretty much standard but fitting should be earthed.
It's clear from the way you asked the question and the suggestion you made that you should NOT be undertaking this work and you pose a danger.
I agree with Wilko
In the famous words of Dragons' Den "I'm out" but I will extend you the courtesy of telling you why.
This is one of the most confusing threads I've read on here and begins with many incorrect assumptions and much missing information, but the dealbreaker for me is that I...
Thanks, yes perhaps I didn't put it well but that was precisely the point I was trying to make - that extraneous current measured on the earth conductor is not necessarily the result of L/N imbalance in the property.
I forgot to add that of course the RCD won’t trip unless it measures a L/N imbalance, irrespective of earth leakage (unless the leakage is causing the imbalance) ...apologies for stating the bl**din’ obvious!
It's a very bad idea for many reasons, most of which have already been mentioned plus the increased risk of even a small accident/short/miswire/damp etc blowing up your camera. Use separate cables/enclosures and separate conduit (with a pull so you can add extra cables if required).
You'll need...
I'm not party to the actual power rating of whatever heaters and water heater will be fitted, but surely you would have to assume no diversity is applied to the actual ratings for these as it's almost certain that all the heaters and the water heater will be on at the same time?
I agree you...
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