625.44 Plug Connected EVSE

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ajdelange

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Mclean, VA
The referenced article seems to be a round about way of saying that no EVSE that draws more than 40A can be connected with a plug. Does anyone have any insight as to the intention of this article? If I am right, why don't they just say "EVSE drawing more than 40 A must be permanently wired". I am quite puzzled by this and it is confusing as it stands. NEMA 14-30, 14-50 and 14-60 are the same receptacle/plug except for the neutral pin which is not used in Level 2 EVSE.

Any thoughts would be much appreciated!
 
Well, it does say a bit more than that, it prohibits the use of 6-30 or 6-50 receptacle. Which seems pretty stupid to me, since for a 14-30 or 14-50 receptacle, you have to run a neutral that won't be used by the EVSE.

Cheers, Wayne
 
What NEC are you looking at?
A NEMA 6-50 is what we install all the time for these.
Both the 2017 and 2020 allow this:
625.44 (B) of the 2017 NEC:
Code: 
 Stationary Equipment. Stationary equipment intended to
be fastened in place in such a way as to permit ready removal for
interchange, facilitation of maintenance or repair, or reposition-
ing shall be connected to the premises wiring system by one of
the following methods:
(1) A nonlocking, 2-pole, 3-wire grounding-type recepta-
cle outlet rated 125 volt or 250 volt, single phase, up to
50 amperes

625.44 (B) of the 2020NEC:
Code: 
 Fastened-in-Place Equipment. Equipment that is intended to
be fastened in place in such a way as to permit ready removal for
interchange, facilitation of maintenance or repair, or reposition-
ing shall be connected to the premises wiring system by one of
the following methods:
(1) A nonlocking, 2-pole, 3-wire grounding-type recepta-
cle outlet rated 125 volts or 250 volts, single phase, up to
50 amperes
ajdelange said:
The referenced article seems to be a round about way of saying that no EVSE that draws more than 40A can be connected with a plug. Does anyone have any insight as to the intention of this article? If I am right, why don't they just say "EVSE drawing more than 40 A must be permanently wired". I am quite puzzled by this and it is confusing as it stands. NEMA 14-30, 14-50 and 14-60 are the same receptacle/plug except for the neutral pin which is not used in Level 2 EVSE.

Any thoughts would be much appreciated!
Click to expand...
See 400.12(1)
Uses Not Permitted. Unless specifically permitted in
400.10, flexible cables, flexible cord sets, and power supply cords
shall not be used for the following:
(1)As a substitute for the fixed wiring of a structure
Click to expand...

And 400.10 (8)
Appliances where the fastening means and mechanical
connections are specifically designed to permit ready
removal for maintenance and repair, and the appliance is
intended or identified for flexible cord connection.
Click to expand...

Appliances over 50 Amp typically do not meet this
 
I can relate to that. Its a strange article like a few others in 600 that seem not really needed.
 
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