I was leaving our bedroom the other day and I was turning out the light when I put my other hand on the CH radiator just to check if it was warm. Big shock and tingling fingers on both hands! The lightswitch is a stainless steel cover plate with plastic rocker switches.
I have removed the switch from the wall to check the connections and all looks OK, no bare wires touching anything else, and the earth wire in the switch cable is connected to the terminal on the cover plate. I have an old AVOmeter passed down to me by my father-in-law and a rudimentary knowledge of how to use it. It is showing approx 230 volts between one side of the switch terminal and the earth terminal, which I think is to be expected.
I have gingerly tried touching the rad and the switch simultaneously again, but I don't get a shock now.
Have I got a problem? If so, is there anything else I can do to trace the fault and hopefully correct it?
TIA Pete