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National Electric Code to require upstream GFCI
5 CommentsSorted by Oldest First
Why do you consider EVSE to be an outlet? I wouldn’t think so.
Why do you consider EVSE to be an outlet? I wouldn’t think so.
In the National Electric Code the word "outlet" means the connection from the branch circuit to the utilization equipment. The word "receptacle" is a different defined term. NEMA 14-50 is a receptacle.
OpenEVSE is (arguably) an outlet.
Thanks, that makes sense. Do you think this will cause more nuisance tripping with OpenEVSE?
There are primary two causes of "no problem" trips
- The (very important) ground continuity checking of OpenEVSE itself.
- The vehicle's AC to DC electronics.
The original EVSE standard included, and OpenEVSE implemented, appropriate protection, at the CCID20 level.
Take a look at the https://www.cpsc.gov/Research--Statistics/NEISS-Injury-Data and you can see how well that protection has worked out.... without an upstream GFCI.
Take a look at the https://www.cpsc.gov/Research--Statistics/NEISS-Injury-Data and you can see how well that protection has worked out.... without an upstream GFCI.
Bryce Nesbitt
While several states including Oregon are going a different way, the NEC is doubling down on upstream GFCI in front of an EVSE. Prior to this change it only receptacles required an upstream GFCI. The code change is:
625.54 Ground-Fault Circuit-Interrupter Protection for Personnel.
All receptacles and outlets installed for the plug connection of electric vehicle charging shall have ground-fault circuit-interrupter protection for personnel.
Where "and outlets" means hardwired EVSE. The ground fault detection inside OpenEVSE would then be downstream of the building GFCI. Public comments are due August 28th 2024, on this section 625.54.