I have tried turning everything off and testing one by one to identify a problem appliance - not worked. I have checked all the wiring in the sockets to check if there is a problem with that - all ok. This won't have blown a fuse in the past, but will trip an RCD. ... We have unplugged all appliances taken out all the fuses from spurs (To our knowledge) and it still trips when nothing is plugged in, Before we get an electicrian to rip open the walls to check cabling does anyone know anything else we could do? Once everything is unplugged, go and re-set the RCD. It will be hard to track down though, as it could be anywhere. As irritating as a tripping safety switch may be, it is only doing the job it is designed to do! I have a multimeter and have tested some of the plugs. All my fridge, freezer and all sockets keep tripping after 5 - 20 secs, I've now unplugged everything except fridge n freezer as I can't get to them and Its still tripping? A few weeks ago the main RCD started tripping, it would trip 5 or 6 times in quick succession and then settle down. I'm back there next weekend. I switched it back on this morning, it tripped a couple more times in the morning and 4+ times throughout the afternoon. so all circuits are working. I was called in to try to resolve the fault, on first inspection I found that the RCD would not reset unless all mcb's were switched off, then reset RCD and switch each mcb individually. Managed to wire everything up to the right hand RCD. rcd keeps tripping nothing plugged in - please help! Then voila! My question is - is there a way to systematically find where the fault lies without having to take each plug out? Have a closer look at the switches on your fuse box to try and see which switch on the RCD (Residual Current Device) has broken the electrical circuit. Yes, everything. Some time later it would repeat the process. The problem with a MCB is it only turns off the line, the neutral is left connected. Rich I have unplugged everything and when the CB is switched on - this will cause the RCD to trip again. The basic setup is a standard consumer unit in the kitchen with all circuit breakers split across 2 RCDs - No circuits which aren't covered by an RCD. I have a rcd tripping (ring main). As a safety switch is designed to shield people from an electric shock, if it has tripped that usually means there is a problem somewhere that needs to be addressed. So start putting the MCB's in left to right and the last MCB on right may trip the RCD, but start putting the MCB's in right to left and the last MCB on the left can trip it. Neutral, ground and hot should all register no continuity between each other with everything unplugged and all light witched off. Step 4. RCD keeps tripping with no MCB switched on. Any help is greatly appreciated. Anyone have any idea why the rcd on the fusebox keeps tripping out? I have changed the RCD over to an empty one - this also trips (all others that are connected to the rest of the house are oK). Use each one and keep going until one of them triggers the RCD. Your TV, your hair straighteners, your washing machine etc. Since last night (high winds and rain), one of the RCDs has been tripping with a loud bang every so often, perhaps 8 times last night. If it re-sets then you know one of those appliances is causing the tripping. I get an Ohms reading which I think confirms it is a ground fault. It is just the last MCB just puts it over the limit. Why does my safety switch keep tripping? Now, go around and start plugging them back in one-by-one. Since they've left for the evening however, one of the rcds keeps tripping. I've unplugged everything from the sockets that keep blowing and it still trips. 0. 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