Hi all, hope you can help me.
The problem is that whenever I switch on the water heater for my boiler, it trips the RCD on the main circuit and all the electrics go out. I have lived in my house for over a year now and this is the first time this has happened.
The water heater switch is located in a cupboard where the boiler is held. I have checked the switch wiring and there is nothing loose or out of place, I assume it is a earthing issue but cannot find the cause.
Any ideas of how this issue can be remedied would be greatly appreciated.