Some electrical advice needed please. The switch on my fuse box for the downstairs sockets keeps tripping. It's not regular and there seems to be no pattern to it - usually happens when I'm out or during the night. All that would be working then are a fridge/freezer and a seperate freezer. The phone is also plugged in plus the tv, freeview box, video etc. I've had an electrician in and he has done various tests and can't find the fault - these intermittent faults are the worst to find apparently. It happened again last night. The worst that can happen it that I'll lose the food in the freezers but it is still a nuisance and I'm getting concerned about it and worry about going away for any length of time in case it happens then.Anyone got any suggestions please?