06/01/2023
Currently having a lot of jobs involving a constantly tripping RCD, which is normal for this time of year. RCDs trip when electrical current leaks into the earth wire, and one of the more common causes is damp. Other common causes are faulty appliances, heat damage or plain old faulty wiring.
If your RCD keeps tripping, you can often narrow down the fault by elimination -
Turn off all circuits, reset the RCD, then turn on the circuits one by one (leave a few seconds between each one). This will show which circuit has a fault. Once you know that, it can be possible to narrow it down further, for example by unplugging all appliances on a socket circuit, turn the power on then plug them in one by one.
Attached are a few pictures of recent trip culprits