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I was working on a 12 gang gridswitch today - it was hanging off the wall so I re secured it. It controls various lights which are fed by two seperate mcbs on the distribution board. I noticed that all the cpcs were connected together to the back box. Is this normal/correct practice as it is...

I have just modified an ancient valve amplifier to remove the DP fusing and it set me wondering - why did anybody ever think that double pole fusing was a good idea? I know it was almost standard practice in the past, but can't understand why. Can anyone shed any light on this? thanks Paul

I was working in a flat today, and I noticed in the hallway is a small gas wall heater (I think valor?) which has no flue. It is fitted on an internal wall, and on closer inspection the heater seems to have no povision for a flue. Is such a thing safe, or legal. Heater I would guess is late 60's...

I just posted "Unbelievable response from electricity supplier!" and it has disappeared, presumably deleted. This was a genuine post, not a spoof at all. I posted it out of concern that this was the advice being given to members of the public by people who should know better! Paul