My RCCD trip yesterday evening and I have narrowed it down to the down stairs ring main but having unplugged everything it still trips. I have also disconnected the central heating and kitchen fan at the spur box but it still trips. That only leaves the built in oven which I think is connected by a spur so if it isn't that I am at a loss. I should be able to get to where the spur for the oven breaks out from the ring but I don't see why this should suddenly have gone as it wasn't in use at the time. I can only assume that the next course of action is to progressively disconnect sections of the ring between junction boxes to highlight where the fault lies? Is there anything else I should try before I call in a sparks?
Kevin