On Tue, Mar 12, 2013 at 1:39 AM, Willie McKemie <[email protected]> wrote: > On Mon, Mar 11, 2013 at 07:51:34PM -0700, peri hartman wrote: >> Incidentally, a year or so ago, i emailed the program director for the >> wash-ore I5 ESVE network. They said, i'm pretty certain, the cost was >> about $20K per station. I presume most of that is bringing the power to >> the location. At any rate, the cost of the connector and contactor is >> relatively small. I have no idea how much it costs to install RV hookups - >> presumably a lot less. Maybe they are substantially lower power? > > I believe most 240vac RV panels do 50 amps while most J1772 EVSEs do > only about 30 amps.
Technically, if you're charging an EV on your typical RV panel with a 14-50 outlet, you should only be charging at 40A maximum as charging an EV counts as a continuous load and the NEC dictates that the ampacity of a circuit be derated by 20%. This is why your typical 30A J1772 EVSE is installed on a circuit that can handle at least 40A and is protected by a 40A breaker. -Dave _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
