I haven't sufficient electrical engineering knowledge to know why this happens, but: - It only happens with the Mac Studio, I've never seen another device do t

I haven't sufficient electrical engineering knowledge to know why this happens, but: - It only happens with the Mac Studio, I've never seen another device do this. - It happens whether I use the original supplied cable or not - A 30mA GFCI doesn't take much to trip, so I can imagine a little arc flash from the phase pins can create enough plasma sputter to then arc to ground - It's certainly a ground fault as it only happens on GFCI protected circuits - It's not a fault in my electrical installation, that has been checked recently now. - It can be reproduced if plugged into any GFCI protected circuit, at home, in the office, a friends house Some random ideas of mine: - Perhaps Apple haven't adhered to the specs around the "gigantic clearances" - The pins on the socket-side have this same matt-like finish the rest of the Aluminium body does, perhaps this has something to do with it.