[EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Hi Cor, Your recent posts on the EVDL made me thing you might be able to answer a question for me. Do you know anyone that can repair a JuiceBox? I have two that became very flakey on WiFi and failed a short time later. I looked into replacing one WiFi module but the part was no longer

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Cor, yes, you are 100% correct, but there are also many shitty EVSEs out there that aren't "well designed" or even UL listed. They are all over Amazon, and people buy more of them every day. As proof, I have several that were given to me that trip the upstream GFCI as soon as they are connected,

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Phil, NOPE! The *correct* designed EVSE will have a test circuit that indeed generates a GFCI test fault current but *only* in the EVSE's GFI circuit, not in the upstream 240V connection. The reason that an EVSE often trips the upstream GFCI is not due to the EVSE but due to the *huge* capacitance

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

IIRC, J1772 specs 20ma. So it will likely put an over 20ma ground fault intentionally during its self test. On Fri, Apr 12, 2024 at 12:01 PM EV List Lackey via EV wrote: > On 12 Apr 2024 at 13:35, Mark Hanson via EV wrote: > > > An HTML attachment was scrubbed.. > > Thanks Phil etc > >

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

On 12 Apr 2024 at 13:35, Mark Hanson via EV wrote: > An HTML attachment was scrubbed.. Thanks Phil etc Sometimes the code doesn't explain why there's certain rules that appear arbitrary (like the 12" cord rule). The larger units are limited to 6'. Presumably the GFCI trip current (inside a

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Yes, the 12" restriction is because all EVSEs are required to have integral GFCI protection, but of course this will do no good for wiring "before" the EVSE, so they mandate this cable is as short as possible. EVSEs are used in mechanically hostile environments, so it's likely that a certain

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

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Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Yeah the EVSE's GFCI is required to self-test, so that self test can trip an upstream GFCI. Which means every time you try to charge you get a nuisance trip. If you must install a GFCI on your 14-50 because of your local AHJ, try to obtain a 30ma unit not a 6ma. Best thing to do is hardwire it

Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

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Re: [EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

NEC article 625.17 has a mention that the input cord length shall not exceed 12” if the personnel protection system (GFI?) is located in the EVSE enclosure. That appears to be an ‘out’ for needing a GFI breaker? Just speculation. Tom Keenan > On Apr 12, 2024, at 7:14 AM, Mark Hanson via EV

[EVDL] NEMA 14-50 Receptacles for EVSE, EV Charging

Hi folks When reading the 2020 NEC for a master electrician exam, I noticed 210.8(B) says that 50A and below must now have a GFCI breaker at the panel that Tesla etc says will cause nuisance trips (see article). 625.54 in the EV section further states “All receptacles for EV charging shall have