On 22/04/2021 17:40, Chris Hogg wrote:
....
I've not followed this thread all the way, but why not simply have two
meters at home, one for the domestic stuff and the other for the car
charger?..

The problem is that an electric car does not have to be charged from a
dedicated and separately metered supply. You can plug it into any 13A
socket and it will charge, albeit slowly. Thus any solution has to allow
for that possibility.



--
Colin Bignell