Every 2 weeks my main RCD trips and it wont reset. After an hour it will allow me to reset it and its fine for 2 weeks.
The main RCD has a short spur to another mini RCD board that was installed 10 years ago to power the extension. The Main breaker on this mini board trips but the individual lights/ring main RCDs on this mini board don't trip. This next circuit powers my kitchen which has integral fridge, freezer, cooker and dishwasher so I am unable to find the plugs to disconnect them but I'm thinking perhaps its not a faulty appliance as the individual ring main and lighting RCDs never trip just the main breaker to the extension.
Is my RCD faulty? I can't afford an electrician so I only want to get an electrician if its something I can't fix myself and most of the time there is no fault for them to assess.