On 7 Dec 2013 at 23:51, Cor van de Water wrote: > the 10-50 is 3-prong (240V only, no Neutral so no 120V)
However, many, perhaps most, electric stoves DID use the combined ground and neutral for a 120 volt tap. This wasn't really very safe. I've read that this odd situation - a 3 wire feed to stove and electric clothes dryer receptacles, with neutral and ground combined - was permitted during the second world war in an effort to save copper. Dryers often drove the drum light from the 120v tap, and many times the motor too. Stoves used it for indicator lights, oven lights, and panel lights. The code allowing this wasn't changed until the late 20th century (I don't recall the exact date). Existing installations are grandfathered, but if you make any changes, code requires that you update to a 4-wire (separate neutral and ground) feed and 4-pin receptacle. But if you already have a 3-pin dryer, range, or welder receptacle in your garage, it's fine to charge your EV from one of these 3- pin receptaces as long as your charger is 240 volts only. As for whether I'd use it for charging I shared with the public - well, maybe not. But then with the legal situation what it is today, I might think twice about allowing strangers to charge on my property regardless. I know it sounds uncharitable, but I'd hate to get sued if somebody got shocked or injured using my 14-50 or whatever receptacle to charge his EV. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ 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)
