Disagree with the fire risk comments, even if it burns it's outside in a suitable enclosure. The real problem here is DIY RCD with microcontroller in the loop.

Disagree with the fire risk comments, even if it burns it's outside in a suitable enclosure. The real problem here is DIY RCD with microcontroller in the loop. The soldering on the high voltage wires is absolutely horrendous and if those come loose and the enclosure or chassis becomes live you are trusting your life on the atmel interrupt delay and software. Good luck! Edit: it's not even an interrupt, its just part of the Arduino loop(): https://github.com/fotherja/EV_Charger/blob/main/EV_Charger.ino#L154 https://github.com/fotherja/EV_Charger/blob/main/EV_Charger....