A few months ago we found each time we turned off the socket that feeds our TV at the wall the RCD in the consumer unit tripped off. This was the big one at the end not the individual switch that is on each circuit. I assumed a problem with the socket and was going to replace it, but in the mean time just stopped turning off at night. Last week my wife tried to make some toast and the RCD went off again and each time she tried to use the toaster it did it again so I assumed the toaster was knackered and bought a new one. We plugged in the new toaster which worked fine right up until it popped up and that tripped the RCD as well ( so I now have two toasters!) Could it be that the RCD in the consumer unit is faulty and is over sensitive? and are these replaceable or will it need a whole new unit (this one was only fitted about 6 years ago when house was extended).