MikeD wrote:lavalanguage: The 2017 NEC under article 625 appears to me to specify that a non-locking receptacle shall be used for a portable EVSE. To use a locking receptacle (normally of use only when vibration is present, say from a generator) not only presents an enhanced tripping danger but also more of a danger of pulling the receptacle apart if the plug is constrained when subjected to a large pulling force.
Secondly, I would, like Nissan, recommend a 50A dedicated circuit be run, not only because the heavier gauge wire is safer, but because portable EVSEs of the near future may require it. Also I currently see no reason to run a neutral wire. Thirdly, suggest running enough excess wire so that it would be easy to convert the circuit for a direct wired EVSE in the future for greater safety.
Compared to the labor adding the forth wire (neutral) is cheap. That way the receptacle is wired normally. Yes the EVSE does not require a neutral but many other things (Like an RV) do.