wombweller
Member
Hi
I've just been testing and old Electric double dial railway station clock to make sure it's safe.
The surround for the clock is metal of some description it is covered with a thick layer of paint.I plugged it in to the 240v mains to see if the internal light works and while doing this I decided to put my electrical test screwdriver on the Earth contact that's connected to the metal housing.I found that when I did this the light within the screwdriver glowed red.I stripped back everything as I assumed I had something leaking from the positive wire.I ended up taking the power lead right out as I could not find any bare wires.
I connected a 3way terminal block to the cable and then tested the earth again, it once again made the test light glow but not a bright glow like the positive wire??
I am baffled and it makes me a little worried as it seems the metal case of the clock was live!!
What going on as I can't find any leakages from the positive side????? and why does it not trip the fuse box?
I've just been testing and old Electric double dial railway station clock to make sure it's safe.
The surround for the clock is metal of some description it is covered with a thick layer of paint.I plugged it in to the 240v mains to see if the internal light works and while doing this I decided to put my electrical test screwdriver on the Earth contact that's connected to the metal housing.I found that when I did this the light within the screwdriver glowed red.I stripped back everything as I assumed I had something leaking from the positive wire.I ended up taking the power lead right out as I could not find any bare wires.
I connected a 3way terminal block to the cable and then tested the earth again, it once again made the test light glow but not a bright glow like the positive wire??
I am baffled and it makes me a little worried as it seems the metal case of the clock was live!!
What going on as I can't find any leakages from the positive side????? and why does it not trip the fuse box?
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