Flyct said:I spent my 38 year working career supporting equipment that plugged into14-50R receptacles in commercial establishments. That’s the same 14-50R that mosT L 2 EVSEs use and 50 amp RVs use.
We are flying blind here, now that OP has clarified that he is trying to plug into a receptacle at a commercial bldg. We could help him if he does two things:
1. Check the voltages at the receptacles:
hot to hot
hot to neutral
2. Takes a clear close-up photo of the receptacle so that the labeling can be read.
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A 400v 3p would have 230v on each hot (meaning L-N), while the L-L will be 400v
A 480 3p would have 277v when measured L-N, and 480v when measured L-L
Flyct: you were connecting 14-50 to a 120/208 3p system. No problem there.
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Tesla specs its EVSEs and OBC for up to 277v, but I was under the impression that is unusual. I'd be frankly amazed if the LEAF OBC could handle much over 120v L-N but I'm not sure of the actual spec.