I've had a few occasions where the DC/DC converter was the only 12V source for the EV. Under normal circumstances 500W seems fine. Extreme loads (winter with headlights, full fan, full wipers, lots of braking and vacuum pump) will trip the fuse/breaker.
Slightly OT, does anyone have a good way to add manual function to a HV contactor? It would be nice to be able to turn on the DC/DC converter manually in case of 12V failure without having to rig a jumper. I vaguely remember that one of the OEM EV's had such a button in the glove compartment for that exact situation. Barry On Mon, Jun 6, 2016 at 8:20 PM, Jay Summet via EV <ev@lists.evdl.org> wrote: > > > On 06/06/2016 03:04 PM, Jan Minnie via EV wrote: > >> >> I'm new to this and your discussion has me totally confused. What is >> the verdict? Sep 12v Battery for accessories or not?? >> >> > You should use a 12 v battery as well as a DC/DC converter or alternator > to keep it charged. The 12 volt battery will provide redundancy and power > things like emergency flashers, horns, etc even if the DC/DC converter > fails. It also allows your DC/DC converter to be sized to the average load, > instead of the maximum surge load on your 12 volt system. > > Jay > > _______________________________________________ > 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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160606/256ae87b/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)
