New Leaf owner in SW Washington

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My Leaf came with a charging cord ( EVSE ) that has a NEMA 14-50p plug. The Leaf I have has EVSE is rated at a maximum of 30 Amps at 240 VAC. My Leaf’s OBC ( OnBoard Charger) is 6.6 kW and typically draws 27.5 amps continuously when charging. I use AWG 6 wire for the hots and neutral ( that the EVSE does not use) and and AWG 8 ground ( protective earth ground) wire. I have it on a 50 amp breaker ( 50 times 0.8 = 40 amps ). The breaker protects the wire whose ampacity is ~65 amps. This also allows me to charge other EVs up to 40 amps continuously. This is safe and future proof.
 
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In case it isn't obvious, this is response to post #60, not the above #61
I think you are totally missing the point.
Lets take the common 15/20 amp outlet found in homes. They are made in both 120 and 240 volt
All the "pins" are the same size between the two voltages, but the are in different configurations.
This prevents 120 volt items from being plugged into 240 outlets.
The size or shape of the pins doesn't determine the capacity, they are a visual and physical indication of the circuit capacity.
The above NEMA 5 and 6 receptacles will only accept plugs of the correct type, they can also accept NEMA 1 and 2 (two wire, no ground) type plugs.

I too have seen replacement plugs that have different shaped pins so it could replace many plugs with one stocking number. How (what and what orientation of the pins) determine what the plug is for. I don't think they do that anymore, as I think there is a requirements that the amp and voltage must be marked on the plug.
It isn't that the pins can "handle" more current in one orientation, then the exact same pins in another orientation.
to be UL listed the plug, and wire gauge must be correct for the voltage and current the device needs.
None of the "adaptors are likely to carry the UL rating esp those that adapt "up" allowing a 50 amp plug fit a 30 amp outlet.
 
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