I plugged in a friends EV who was staying overnight via an extension lead via three pin plug into my garage wall socket. Blew the main house fuse after 40 mins. Most inconvenient. And the extension lead cable insulation was melting. I know I should have unwound the extension cable completely.
I will stick with my +8
Helped a friend connect his 3kW EV charger up over Christmas. It specifically says not to use extension leads irrespective of cable gauge, so we found a 13 amp socket in his outbuilding on a dedicated ring main (which is also a requirement) which allowed the charge cable to reach his car.
I doubt these chargers are constant power devices but if they were would draw more than the expected 12.5 amps due to volt drop along the length of any extension lead used.
