All the so-called convenience chargers were 120V only with J1772 plug (until recently, I have seen at least one OEM dual voltage one) so that is why the J1772 standard has both 120V and 208/240V levels. And indeed, the EVSE receives phase, neutral and ground in those cases. So yeah, the charger needs to accommodate all of this. I used to have a truck with a "Bycan" resonant transformer. It could be switched from 120V to 240Vinput. Obviously on a public charging station it needs to be set to 240V problem was it only received 208V and despite being a resonant transformer, the charging rate at that speed was less than when charging from 120V. All modern chargers that I know of are multi voltage and have no problem with the J1772 input of 120V or 240V AC, the only issue is that they are designed for a certain max current, so automatically at 120V they can only operate at half the power as when they receive 240V.
-----Original Message----- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Rush Dougherty via EV Sent: Tuesday, April 17, 2018 12:15 PM To: 'Electric Vehicle Discussion List' Cc: Rush Dougherty Subject: Re: [EVDL] Adding J1772 Plug to a conversion Hi Damon, All the Level II EVSE's are 220-208vac only, no 120vac at all. The J1772 Spec does not allow for a neutral. The level II J1772 Plug has hot, hot and ground only, no neutral. If you try to use the ground as a neutral the EVSE will fault. That being said Chargepoint does have an EVSE with a 120vac 5-15 plug in it, but you still have to access the network to open access door and there are actually very few of them around. So unless you have a 240vac capable charger for your truck, you won't be able to use the Public EVSE's (unless you have a 240 to 120 transformer). I do have a J1772 Adapter Box on my website that will communicate with the J1772 EVSE's to enable charging from them. Rush Dougherty Tucson AZ 85719 www.TucsonEV.com > -----Original Message----- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Damon Henry > via EV > Sent: Tuesday, April 17, 2018 9:40 AM > To: EV List > Cc: Damon Henry > Subject: [EVDL] Adding J1772 Plug to a conversion > > I'm investigating making my Datsun Truck compatible with public > charging stations. Does > anyone know of specific websites or Discussion Forum threads I should > check out. I > currently require a 120 volt 20 amp circuit to power my modular > charging solution, but I may > also look into adding a more traditional series charging solution if I > feel it would work better. > > thanks > Damon > -------------- next part -------------- An HTML attachment was > scrubbed... > URL: <http://lists.evdl.org/private.cgi/ev- > evdl.org/attachments/20180417/51a04b7f/attachment.html> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA > (http://groups.yahoo.com/group/NEDRA) > > > --- > This email has been checked for viruses by AVG. > http://www.avg.com _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
