[hopbackguy]

But the charge unit should have been installed on a separate circuit to the consumer unit, protected by its own breaker surely? Thats what the installation standards say don't they? In which case I don't understand why the fridge freezer and the charge unit should interact.... :?:

 

[hopbackguy]

From your described problems it sounds as though your charger is installed on your house distribution system RCD and not on a dedicated RCCB specifically designed for the equipment it is supplying. Or maybe the dedicated circuit RCCB is fed from a CB on your distribution board backed up by the distribution board RCD hence your problems. Household Dist Bd RCD's are not designed to handle the EV charging systems because of the AC/DC switching impulsing involved hence the dedicated circuit and RCCB which is designed for this type of load.

Yes, thats what my point above was. The charger should be on a slot in the consumer unit *not* protected by the house RCD, and have its own RCCB. Thats how my electrician did mine.