The J1772 Spec from the 2017 SAE Standard states - Table 9 - AC charging electrical ratings (North America) AC Level 2 208 to 240 V AC, 1-phase ≤ 80 A Per NEC 625
So your 245VAC may not be safe for some EV's Best, Rush Dougherty TucsonEV www.TucsonEV.com > -----Original Message----- > From: EV <ev-boun...@lists.evdl.org> On Behalf Of Cor van de Water via EV > Sent: Tuesday, September 3, 2024 6:24 PM > To: Electric Vehicle Discussion List <ev@lists.evdl.org> > Cc: Cor van de Water <cor.vandewa...@gmail.com> > Subject: Re: [EVDL] Are you NACS-charging a non-Tesla > > So, best to use a little step-down transformer on your TeslaTap... I have a > "dry > type" 240V to 32V 1kVA transformer and I wire the secondary in series with > the primary so that when putting 277V on the series connection, it drops 32V > and delivers a safe 245V from the primary winding. > > On Tue, Sep 3, 2024 at 5:55 PM (-Phil-) <p...@ingineerix.com> wrote: > > > > Yes, I personally witnessed this happen at a Casino in Reno. Many Tesla > destination chargers are wired to 277VAC. > > > > On Tue, Sep 3, 2024 at 5:31 PM Cor van de Water via EV <ev@lists.evdl.org> > wrote: > >> > >> The only concern I would have with using a TeslaTap on an unknown > >> destination charger is that you are not guaranteed that the charger > >> won't damage your non-Tesla EV. > >> Because the Tesla charger is specifically specified to allow anything > >> between 100-277V so, while not common, some electrician may use a > >> commercial site's 277V parking lot lighting connection to wire up a > >> destination charger, making it very dangerous for any non-Tesla EV to > >> plug in... > >> > >> On Tue, Sep 3, 2024 at 2:15 PM Rush via EV <ev@lists.evdl.org> wrote: > >> > > >> > There are currently lots of versions of the 'teslatap'. It is just > >> > an adapter that changes one type of connection to another, Tesla > >> > inlet to J1772 plug. There are no resistors, diodes, PCB's or any > >> > electronic components in it. That is because the J1772 L1 and L2 > >> > protocols are used by Tesla and all the other J1772 EV's > >> > > >> > Years ago, in 2016, I tried to produce an injection molded Tesla to > >> > J1772 Adapter but found it way beyond my financial means. I did > >> > learn how the Tesla plug/inlet was able to accept both 120vac and > >> > HVDC using the same pin connector. Tesla uses BalSeal type coil > >> > springs in adjacent configurations to transfer the current from > >> > male to female connector so that there are lots of contact points > >> > for current transfer whereas the J1772 connector uses just a simple > >> > pin connector so that there are only 4 contact points for current flow. > >> > > >> > Best, > >> > > >> > Rush Dougherty > >> > TucsonEV > >> > www.TucsonEV.com > >> > > >> > > -----Original Message----- > >> > > From: EV <ev-boun...@lists.evdl.org> On Behalf Of Lawrence Rhodes > >> > > via EV > >> > > Sent: Tuesday, September 3, 2024 8:37 AM > >> > > To: ev@lists.evdl.org > >> > > Cc: Lawrence Rhodes <primobass...@sbcglobal.net> > >> > > Subject: Re: [EVDL] Are you NACS-charging a non-Tesla > >> > > > >> > > I have used a TeslaTap at destination chargers for years, on a Leaf. > >> > Lawrence > >> > > Rhodes > >> > > -------------- next part -------------- An HTML attachment was > >> > > scrubbed... > >> > > URL: <http://lists.evdl.org/private.cgi/ev- > >> > > evdl.org/attachments/20240903/2c3dbd75/attachment.htm> > >> > > _______________________________________________ > >> > > Address messages to ev@lists.evdl.org No other addresses in TO > >> > > and CC fields > >> > > HELP: http://www.evdl.org/help/ > >> > > >> > > >> > > >> > _______________________________________________ > >> > Address messages to ev@lists.evdl.org No other addresses in TO and > >> > CC fields > >> > HELP: http://www.evdl.org/help/ > >> > > >> _______________________________________________ > >> Address messages to ev@lists.evdl.org No other addresses in TO and CC > >> fields > >> HELP: http://www.evdl.org/help/ > >> > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
