The J1772 SAE Specifications state - 5.1 Electrical Ratings Table 9 - AC charging electrical ratings (North America) Charge Method Nominal Supply Voltage Max Current Branch Circuit Breaker (V) (Amps-continuous) rating (Amps) AC Level 1 120 V AC, 1-phase 12 A 15 A (min) 120 V AC, 1-phase 16 A 20 A AC Level 2 208 to 240 V AC, 1-phase ? 80 A Per NEC 625
So if in fact there are EVSE's with 277VAC, then they are out of spec with the J1772 Specifications. Best regards, Rush Dougherty TucsonEV www.TucsonEV.com > -----Original Message----- > From: EV <ev-boun...@lists.evdl.org> On Behalf Of John Lussmyer via EV > Sent: Tuesday, June 20, 2023 7:23 PM > To: (-Phil-) via EV <ev@lists.evdl.org> > Cc: John Lussmyer <cou...@casadelgato.com> > Subject: Re: [EVDL] EV Digest, Vol 128, Issue 17 > > I've run into some J1772 stations that are 277V. (at least, that's what my voltage > monitor said.) > > On 6/20/2023 6:32 PM, (-Phil-) via EV wrote: > > I've also warned about using Tesla destination chargers, as some are > > hooked to 1 leg of 480 3-phase wye, which is 277V nominal which most EVs will not > > tolerate. For example, a Leaf will blow it's on-board charger. Teslas > > are rated up to 300VAC. Most others top out at 264VAC. There is no > > good way to tell before you plug your non-Tesla EV in and there's > > smoke and you are stuck! > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > > > -- > This email has been checked for viruses by AVG antivirus software. > www.avg.com _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/