The mini ABB Wylex circuit breaker for the upstairs lights trips even when there are no lights on. I have swapped it over for the downstairs breaker and it worked fine but whichever breaker is fitted in the upstairs holder .. trips?
How can I test to isolate the fault?
I have now also disconnected all light fittings at the ceiling rose and is still trips?
How can I test to isolate the fault?
I have now also disconnected all light fittings at the ceiling rose and is still trips?