14-50 is the most popular receptacle type. There's absolutely nothing wrong with the 6-50 plug type either. The 14-50 plug type was adapted because it was seen as a bit more universally used outside of EVs. There used to be some idea that EVs would park at camp grounds instead of hotels and charge there. While some people do this, this is not really a thing to consider any longer.
The difference between the 14-50 and 6-50 is the the 14-50 has a 3 wires + ground where the 6-50 has 2 wires + ground. The 3rd wire (common) is used for ovens and driers and things like that so they can use 120V and 240V on the same plug. 6-50 is 100% 240V. As far as I'm aware NO EVSE (EV Charger) requires the common wire. So big picture, you're paying to run a 3rd line of 6 gauge copper wire for pretty much no reason.
A rule of thumb is 30A circuit will provide around 15-20miles of range per hour. 40A circuit will provide around 20-25 miles of range. A 50A circuit will provide around 25-30 miles of range. It really depends on how efficient your car is.
One more thing to mention: In 2021, the government will give you a tax credit of 30% off whatever you spend on installing and purchasing an EVSE. This includes labor, material and charger. I forget the dollar limit, but it's pretty high.
Regarding chargers: You need to decide whether you want a dumb charger or a smart charger. In my opinion, the biggest thing you get from a smart charger is the ability to track power usage. Right now Tesla actually has a great deal on a J style charger that is a "dumb" charger. Grizzl-E is another brand that is very well respected, which is actually what I have. For a smart charger, the ChargePoint Flex is probably the best bang for the buck. Be aware, if you leave the charger outside, it will likely fail before the interior one.
Last edited by Ross Moshinsky; 11-13-2021 at 7:00 PM.
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