Electrical

Electical issue/mystery - when turn on bathroom light, all first floor lights turn off

Anonymous user 23/02/2024 - 2.52 PM

We recently had our house re-wired and paid a fair amount, now their seems to be an issue with the lights on the first floor, when you turn the bathroom light on they all turn off. The rewire electrician who did the work cant find the fault and has spent endless amounts of time trying to locate the fault without solution. He now has suggested to rewire upstairs through the loft, at further cost. He is adamant someone has tampered with it since certifying it. Can anyone offer advice an what the issue may be? and whether it should b covered under the electrians rewire guarantee to his customer. We have not tampered with any of the electrics what so ever?? thanks