Can anyone give me any tips on how to locate a short in my house lighting circuit?
I was sitting here at my desk and the whole upstairs lighting went out. The circuit breaker had flipped. When I tried to un-flip it, I saw a spark and it wouldn't flip back, so I conclude the short is still present.
No alterations have been made to the wiring for several weeks here, so I can't imagine what might have happened. I don't have rats in the loft.
I have a mains testing screwdriver at hand (and a multi-meter if needed).
Thank you!
Al