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What is OK for insulation resistance for an appliance. I have been testing my electric tools in my garage/workshop and found a lot of them are 1 to 2 M ohms live to earth Is this OK or should they be better, not a lot I can do about it though. They are AC electric motors (lathe, drill) and...

Thanks for your thoughts I seem to have found part of the problem, one of my storage rads has a leak to earth, hence the tripping until they went off. But there is obviously an external factor that starts abround 7:00 AM as well, as tripping has stopped now the weather is milder and the leak...

Nothing different is used when it's colder just the same storage rads. As it was milder this morning no tripping and my rads were at the same settings. It's seems it is something that is only working when the temp is near to freezing but only comes on about 7AM, but it's not at my...

I wonder it anyone has any thoughts on this, I am having problems with the RCD tripping. It’s a 30mA main RCD on TT installation (overhead cables) (yes I know it should be 100mA but it normally doesn’t trip). It only trips in the morning after 7:00AM and stops at 8:00AM when my E7 switches off...