jjeff said:
Yes with that 20a outlet you should really have a 20a breaker not 30. It's also correct that you should pull the outlet out and inspect the wiring, if it's 12 gauge you should really replace the breaker with a 20a one, if it's 10 gauge(or thicker(smaller gauge number) then all you have to do is replace the outlet with a L6-30r, the same end as comes on new EVSEupgrade units.
As was mentioned above the maximum a EVSEupgrade unit will put out is 20a, which would be fine with a 30a breaker, #10 or thicker wiring and lastly a 30a outlet like the L6-30r.
Another option might be to leave your breaker and outlet alone and simply purchase(or make) a outlet adapter that goes from your current outlet to a L6-30r and in this case don't set the output current of your EVSEupgraded EVSE to more than 16a.
@jjeff. Thanks. So I talked to the guy who installed this outlet for me and he insists that it is a 30 amp outlet, and says it just "looks" like its a 20 amp outlet. He also says "one" of the wires is a 10 gauge and the rest are "200 volt gauge" wires. Nothing he said makes sense to me, so I may as well find a different electrician who is competent at this kind of work and tell him to change it to a complete 30 amp circuit/outlet.
Say I want to "future-proof" the outlet for newer EV's down the years. What outlet and circuit breaker should I go for?
Thanks