if the switch has tripped it takes a process of elimination to work out whether and appliance casued it, or a faulty wall socket might have caused it or some inteferrance to the wire circuit as might be caused by rodents etc.,.

anyway in the end a sparky will find circuit problems could of course be a faulty switch.

len

GO for the safety switch every time. If you keep tripping the RCD then don't blame it, it is doing what it is supposed to do. Find out what the fault is. It may be a pain in the butt but how much is your butt worth? LOL

The other advantage of these is it stops handy persons from replacing the old wired fuses with nails, silver paper or fencing wire. I kid you not.

Doug.