I've been having issues with the PEN unit tripping out repeatedly for my Ohme charger.
The RCD unit wasn't tripping, but the Ohme had no power. The installers came back out and tested it all to conclude the PEN was doing what it is supposed to and cutting out when the feed tips over 250V (which according to when he plugged into my house sockets, it sometimes was).
I've had my regional power supplier out and they've put a clamp on my supply to measure it for a week. If it does indeed repeatedly read as too high, it means the whole area is being fed too much and they'll throttle us down at our local sub unit. Interestingly, this has never been identified in the 40+ years this estate has been here and me being the first on the street to get an EV has this issue only been realised.
The RCD unit wasn't tripping, but the Ohme had no power. The installers came back out and tested it all to conclude the PEN was doing what it is supposed to and cutting out when the feed tips over 250V (which according to when he plugged into my house sockets, it sometimes was).
I've had my regional power supplier out and they've put a clamp on my supply to measure it for a week. If it does indeed repeatedly read as too high, it means the whole area is being fed too much and they'll throttle us down at our local sub unit. Interestingly, this has never been identified in the 40+ years this estate has been here and me being the first on the street to get an EV has this issue only been realised.