I'm having a problem with my RCD 'Safe-T-Cut' spuriously tripping. This happens at random times, seemingly uncorrelated with any activity - morning, afternoon, evening, night, completely unpredictable. This happens every few days - the RCD trips and can be immediately reset. OK for several days before tripping again. The fault - if indeed there is a fault - is obviously transient in nature. The usual advice is to isolate various circuits and turn off appliances to try to isolate the cause but this is obviously impractical when the trip only happens infrequently. I can hardly just disconnect the fridge/freezer for a week to see what happens - and this would not prove anything anyway! i am wondering if the RCD unit itself is developing a fault or is just oversensitive to mains spikes or general voltage instability? It's only a minor inconvenience - unless in the middle of the night - but I would like to get it sorted out. Anyone out there experienced any similar behaviour? Any suggestions? The house has no ground circuit, if this is relevant.
