my friend had a 2nd ceiling light installed in the hall feeding from the original, I think. A 2nd light switch has also been added, so that you can switch off either end. During a recent short powercut, the new light remained on, but dim. (she had used a dimmer bulb by mistake). What caused this and is it dangerous :?:
you say during a power cut, it may have been what is known as a
'brown-out' (NO sniggering at the back!).
It means a very low voltage still on system, not enough to operate any equipment but if it's a low energy lamp which was on at the time it may still glow on dimly.
Unless it stays on when turned off during normal operation I would not worry.
If it's a normal filament lamp which glows when turned off then it needs investigating,
Thx for the 2 replies. It was a qualifed electrician who installed it but didn't know the answer. As my friend is an elderly widow who wanted a 2nd opinion I said I'd try on line for her.
I will pass on the info given by 'Sparx' thank you.
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