Electrical

Strange problem with lighting ring/rcd

Anonymous user 28/02/2024 - 3.23 PM

While i was working away for the week my wife encountered this problem : front dining room light was on (average watt light saving bulb in pendant fitting) and then as she switched on the kitchen lights(2x 3 bulb g9 halogen 40 watt spots) something went pop(presumably a bulb) and it tripped the rcd for the downstairs lighting circuit. She reset the trip switch and it stayed up but none of the lights would work-not any(2 hall, 2 kitchen,2lounge,1 dining room and 1 in utility and 1 in downstairs wc. I suspected a loose or pinched cable that had finally burned through somewhere in either the kitchen switch or one of the 2 light fittings at first. When i got home from london yesterday i unscrewed all fittings and switches starting wit the kitchen first and tested for current using my pen style tester. Everything was dead.btw-i did find a blown g9 in the kitchen and replaced as well. I then checked the consumer unit and suspected a faulty breaker, but thought i'd ticken the cable grip screw on all breakers, hey presto-lights work!!! ...my question is- could a blown bulb cause a wire to loosen of be come looser on the rcd(and trip?) Or would you suspect a faulty rcd? Thanks in advance for any input