I thnk I reset the breaker 10x yesterday I've tested the RCD and it trips at exactly 30mA. [Tested by connecting 1 through 6 47K resistors from live to earth - each adds 2mA of leakage.]
I had a visit from EDF a few months ago. The first guy found something that I believe is key. [Not certain of the exact numbers here as I'm working from memory.] He said my earth imedance was 0.37 ohm to substation, and the spec limit is 0.38 ohms..
Then [just to get out I feel] he said he would arrange for a voltage recorder for a week or so. Of course everything was perfect during that period, so no action. I called up EDF again today and got through to someone who insisted it is my problem and that their supply could not possibly cause my breaker to trip. Further the earth impedance is in spec - even if 1/100 ohm from spec. I really didn't like his atitude.
Any suggestions ? I'm at the end of my tether and tired of re-setting the clocks! My ideas (pssibly off the wall) include: 1. 100mA breaker instead of 30mA - but I don't like the loss of safety protection so it's a last resort. 2. I believe it may be related to capacitance of the wiring as it's a large extended 70s house. I'm thinking about adding a 240VAC rated capacitor(s) at the entry point to try and swamp my wiring capacitance. 3. Add my own earth spike to reduce earth impedance.