OP
pushrod
Thanks for that Pushrod. I had heard that the RCD can get flaky. How could I test it to find out.
You're right about Karsiyaka; we're on the seaside of the main road.
really need an rcd tester that is going to set you back a lot of cash - my multi tester cost me about £650 - they're not cheap! BTW should have said earlier if you do want to just try the swap a 30mA, 80A rcd will be more robust than the 63A version and will probs cost an extra £10.