I had a call to a house and was told that her MCB for the downstairs lights had tripped. She reset the breaker and it stayed on for a couple of hours then it tripped again. When she tried to reset it a 3rd time it wouldnt, just kept tripping so she left it off untill I came. When I got there I reset it and it stayed on for about 2 days. It has just tripped again. Any ideas before I start doin IR tests on Sun?
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