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Upstairs lighting not isolated by any MCB in the consumer unit
Anonymous user 28/02/2024 - 4.01 PM
Hello, My daughter has just moved into a house and asked me to fit a new, fancy light fitting in the main bedroom. However, I discovered that none of the MCBs in the consumer unit turn the power off to that bedroom (and one other), despite there being two MCBs that are marked as being for 'Upstairs lighting'! Is it likely that one of the MCBs has failed (and so won't trip off)? Or is there another likely cause for the problem? Many thanks for any suggestions.
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4 Answers
Internal Repairs
Rating: 5 out of 5
Have you tried turning off the main switch on the fuse board? See if this disconnects the supply. If it doesn't then there could be a smaller sub fuse board tucked away somewhere. If neither of these things help then you'll need to get an electrician in!
Answered14 June 2021
0
Anonymous user
What are you testing it with ? Mcb can weld shut but quite rare. Get a sparks in for an hour to test
Answered14 June 2021
0
Adept Home Services
Rating: 4.9 out of 5
Sounds to me that the most likely reason is that two or more lighting circuits have been combined? Try tripping the circuits individually until you identify the offending circuit. At that point consult an electrician.
Regards
Neil
Answered15 June 2021
0
DEACON ELECTRICAL SERVICES
Rating: 5 out of 5
Are they fed off of a Spur unit from a power supply?
Answered15 June 2021
0