You can install a 15 or 20 amp 125 volt rated receptacle on a 20 amp circuit breaker. The continuous rated ampere load is 12 amps on the 15 amp receptacle and 16 amps on the 20 amp receptacle which is 80% of the device and/or circuit breaker.
For both 15 and 20 amp receptacles, the minimum size wire is No. 12 AWG rated at 60 C. for a length of circuit of 42 feet. A higher temperature rated wire in the 90 C to 115 C range, we run up to 50 feet. The volt drop shall not go below 1% for lighting and up to 3% for power circuits. If the circuit distance to 20 amp receptacle is over 50 feet up to 70 feet total, we will a 30 amp rated wire, a No. 10 AWG 90 C. rated copper wire for the first 50 feet and 20 amp rated wire, a No. 12 AWG 90 C. rated copper for the next 20 feet or you could run the 30 amp rated wire for the entire length of 70 feet for a maximum of 16 amp load on a 20 amp circuit breaker. You have to calculated the maximum voltage drop of a wire which is between 1 to 3 percent of the incoming unloaded voltage at the circuit breaker to the actual voltage at the load end. A electrical worker say he has install a 30 amp circuit, may only mean that the wire size is rated for 24 amps at 50 foot circuit run or 16 amps at a 70 foot run for a 1 percent voltage drop. Roland ----- Original Message ----- From: Ben Goren via EV<mailto:ev@lists.evdl.org> To: Electric Vehicle Discussion List<mailto:ev@lists.evdl.org> Sent: Wednesday, October 21, 2015 10:43 AM Subject: Re: [EVDL] EVLN: Buying An Electric Car: Why Charging Rate,DC Quick-Charging Matter On Oct 20, 2015, at 11:05 PM, Mike Nickerson via EV <ev@lists.evdl.org<mailto:ev@lists.evdl.org>> wrote: > True. I actually meant I've only seen 20A outlets in commercial > installations. My house is wired with 20A circuits and 15A outlets. Hmmm...I may well be confused. I just checked my panel. Most of the regular outlets have 15A breakers. The one for the shop that I thought was 30A is 20A. The patio has a 30A breaker. Appliances have 20A, 30A, or 50A breakers as necessary. I know I've got unconnected wire going to an empty box ready for at least a 30A circuit at the outside corner where I'll be plugging in the EV...I had an electrician string that when he was doing some other work and before the attic insulation was blown in.... b& -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: Message signed with OpenPGP using GPGMail URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151021/4e2844de/attachment.pgp<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151021/4e2844de/attachment.pgp>> _______________________________________________ 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/20151021/4620a2e6/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)
