Forums » Electrical Engineering

GFCI receptacle

    • 10 posts
    February 7, 2019 11:26 AM PST


    Selecting a receptacle  for a electric car charger must be GFCI?




    • 157 posts
    February 7, 2019 11:51 AM PST

    That depends on the location, what year code you are using, what ampere, and whether it is residential or not.


    Prior to the 2017 NEC gfci protection was not required for receptacles rated more than 20 amps.  However the 2017 NEC requires all a lot more in other than dwellings...  A residence is still only require for 15 and 20 amp receptacles


    (B) Other Than Dwelling Units. All single-phase receptacles
    rated 150 volts to ground or less, 50 amperes or less and three phase
    receptacles rated 150 volts to ground or less,
    100 amperes or less installed in the following locations shall
    have ground-fault circuit-interrupter protection for personnel.

    • 10 posts
    February 7, 2019 12:19 PM PST

    it 50A.

    • 8 posts
    February 7, 2019 12:51 PM PST

    "A GFCI is a fussy buzzard. Plus once they start tripping they will trip more and more frequently. My solution is not to use a GFCI outlet since the EVSE has one built in (I believe). If you're not comfortable with that, replace the outlet with a high quality GFCI outlet"

    • 157 posts
    February 7, 2019 1:08 PM PST
    Sumit kumar said:

    it 50A.

    Yes, but at a residence-- no gfci is required.

    Many of these units can be direct wired so that would cover the gfci issue.  Install a disconnect and direct wire the unit.


    • 200 posts
    February 7, 2019 6:22 PM PST
    Thanks for the suggestion of this topic, Sumit.

    If you don't mind to read another topic: PV systems, we are talking about GFCI, GFEP, RCD. Please check if the answer you are looking for is there. If so I will be glad to post here.