Rcd tripping
The last few days the house consumer unit is experiencing the rcd tripping. Narrowed it down to my solar system. But why has it started doing this when not been a problem for the last several months, no water ingress that I can see. Had to turn it all off to keep the house in power . Anyone else experiencing this?
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Due to inverter topology that connects panels to mains you end up with mains potential on the panels. So all you need to do is add water to make a huge (physically) capacitor.
https://files.sma.de/downloads/Ableitstrom-TI-en-26.pdf - this has nice pictures in it that explain the issue.