I am new here so forgive me if this post is in the wrong place. I am not sure if we are all simply DIY'ers on here or if some members are qualified tradespeople, but whatever help you can give, I will take.
The title tells you the problem but let me fill in some background.
In my house there are 2 lights in the ground floor hallway. There are 3 different switches that operate these lights, however there is obviously a problem because the switches only work if other switches are on. It's confusing.
So today I unscrewed all the 3 front plates to see if I could figure out what the issue was. In one switch there was a live wire going into L1 on the 2nd gang but then looped across to the COM on the 1st gang (the one that has the issue). I only noticed this after removing each wire one by one and recording where they came from etc.
Upon putting that wire back in place and using the switch, the circuit breaker tripped. I removed the offending wire but the lights were then flickering. Now I have no power at all on that lighting circuit. The Circuit breaker is in on the ON position and does not trip.
Could the circuit breaker have broken? The consumer unit is quite old (10 years+) and the breakers are made by Legrand.
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