Hello Peter,
In old installation that use no ground, you can either replace the circuit breaker with a Ground Fault Type or even install a Ground Fault Receptacle in the line between the panel circuit breaker and load. If either the Line Wire (Hot) or a color conductor which will be black, red or blue has voltage that is different then the Neutral Wire (White), the the GFI will detect this unbalance and will open up the circuit. In old install, we can according to the NEC, we can install a GFI receptacle on the first outlet from the circuit breaker on two wire circuits. This will also protect the other receptacles down the line on this circuit. This GFI will still work with out a ground source. You will not be able to test the receptacle by pushing the RED reset button. The only place the Neutral and Ground wire can be connected together is at the First Main Switch at a Service Entrance. The Neutral and Ground wire shall remain isolated completely through the circuit until it reaches the First Disconnect Switch. The ground wire is then connected to a ground rod only at the Service Switch Location. Another way is to build the EV with all the incoming AC circuits and Devices Double Insulated from the EV vehicle. This is what I did with my EV. The charger is setting in a insulated non-conductive box as well as the batteries. The EV body is not AC grounded. Only the charger housing is AC grounded. The batteries are disconnected from the charger by a contactor when the charger is turn off. Also the batteries are disconnected from the motor controller when the motor controller is shut down. The motor controller is also place in a non-conductive housing. To test out to see if you have complete circuit isolation, turn on the charger to charged the battery and see if you have any voltage between any of the battery terminals to the body of the vehicle. My is 0 volts. Roland ----- Original Message ----- From: Peter Gabrielsson via EV<mailto:ev@lists.evdl.org> To: David Nelson<mailto:gizm...@gmail.com> ; Electric Vehicle Discussion List<mailto:ev@lists.evdl.org> Sent: Tuesday, October 06, 2015 11:23 AM Subject: Re: [EVDL] OEM EV charging on 120V with no ground? The safety concern is that you have no protection ground so a ground fault inside the vehicle may result in the body of your vehicle becoming live. I've never seen an RV pedestal without ground though? I though that was required for any outdoor outlets. If this is a permanent thing you might want to drive a ground rod next to the pedestal. On Mon, Oct 5, 2015 at 5:07 PM, David Nelson via EV <ev@lists.evdl.org<mailto:ev@lists.evdl.org>> wrote: > What are the safety issues of charging an OEM EV on 120V without the > ground wire connected? I do have an EVSE which will do this if I put > 100kohm resistors between hot-ground and neutral-ground which is what > I have to do to charge with my portable-inverter generator. I'm not > concerned with generator charging but charging from an RV pedestal. > > Thanks, > > -- > David D. Nelson > http://evalbum.com/1328<http://evalbum.com/1328> > http://www.levforum.com<http://www.levforum.com/> > _______________________________________________ > UNSUBSCRIBE: > http://www.evdl.org/help/index.html#usub<http://www.evdl.org/help/index.html#usub> > http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > Read EVAngel's EV News at http://evdl.org/evln/<http://evdl.org/evln/> > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) > > -- www.electric-lemon.com<http://www.electric-lemon.com/> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151006/351ee14f/attachment.htm<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151006/351ee14f/attachment.htm>> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub<http://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> Read EVAngel's EV News at http://evdl.org/evln/<http://evdl.org/evln/> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151006/7d45b920/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
