Public pay charging near my home and some math

[GetOffYourGas]

I'm sorry. I do understand how power draw works but I was absolutely guilty of sloppy and imprecise writing (Mechanical Engineer by education). I was trying to say that if the EVSE was SET to only draw 24A, then it shouldn't matter what type of outlet was on the wall being fed by a 30A breaker and appropriate wiring. Totally recognize that it would be an unsafe practice to put a 50A rated outlet on that circuit as someone other than me would not know the difference.

By "Since the EVSE and car can only use what the outlet gives it", I meant that the 30A breaker would trip if the car and EVSE tried to draw more. Again...very poorly stated and bad practice. And my comment about the wire size was meant to say that the wire is a limiting factor to amp rating.

So...lot of sloppiness up there. Sorry.

Someone else mentioned that the Grizzl-e would be better than the Chargepoint for this case because the Grizz can be PHYSICALLY set to a limit of 24A, which should prevent any attempt to pull at the limit of this circuit.

Rob

A word of caution on relying on breakers. The SE pulls up to 31A, even if the EVSE advertises more. If you are on a 30A circuit, it may or may not trip at 31A, depending on the quality of the breaker, due to how close you are to the limit. Granted, there is a safety net built even into the 30A rating of your wiring so 31A *should* be ok. But I would personally make triple-sure that the EVSE was set to 24A and the car wasn't pulling any more than that.

 

[Teddydogno1]

Agree completely that relying on or EXPECTING to blow a breaker is bad juju. That's why I wanted to order one with hard settings for amp limit. I did order a Grizzl-e Smart and I think it is going to be delivered today.

Too bad my Mini is not even given a birth date yet, so I may never actually get it.

rob