Hello Cor and all,
I charge my EV call Transformer I back in 1978 from a street light circuit that was use for one street light that was behind our building. It was a single circuit of 120/240 vac 60 hz that came from a single phase transformer across the street from the transformer. No other lighting taps came off this transformer. The transformer had a rating of 5KVA. So about 5000 watts / 120 volts = 41.6 amperes. Prefer maximum ampere should be at 80% of this rating in a normal circuit. These type of service transformer may have a service factor up to 2.50% so it is possible to pull more ampere for a period of time. The power company maintains the street lights in our city, so I call the engineering department to see if I can have a service drop of 120/240 vac 60 hz circuit breaker for 40 amps. The onboard battery charger had a regulator set for 30 amps which may surge a bit above this rating. They approved this installation. This was on a wood pole, so I made up a service mast with 20 feet of rigid steel 3/4 inch conduit with a weather head on top. The conduit went to a meter base which was then connected to a weather proof hinge cover circuit breaker panel that hold just one 2 pole 40 amp circuit breaker. Install four No. 6 AWG THW copper stranded wire to the weather head and allow three feet of lead out of the weather head which are two phases (L1 and L2) Black and Red color, a neutral, white color and a ground, green color. The meter base and circuit breaker panel was mounted to a marine rated 3/4 inch plywood painted with a exterior paint. The plywood was mounted a two lengths of electrical channel that will be lag screw to the street light pole. I furnish the service mast completely assemble with fasteners to power company crew when the came to install this assembly. The meter fee at that time was at a industrial rate of $0.01 a kwr. Commercial rates was $0.02 and residential was about $0.03 to $0.04. My maximum bill per month was $1.78 flat meter rate plus the usage rate. Today are electrical rate is a summer rate of $0.10 and a winter rate of $0.06 per kwr. The power company have 5 hydro dams on the Missouri river here in Great Falls, Montana. Lewis and Clark name the falls as the Great Falls. Roland EV Album.com/470 ----- Original Message ----- From: Cor van de Water via EV<mailto:ev@lists.evdl.org> To: Electric Vehicle Discussion List<mailto:ev@lists.evdl.org> Sent: Friday, December 05, 2014 3:39 AM Subject: [EVDL] BMW street light with charge plug We just discussed this the other day: Streetlights with charging plugs - what a concept! https://www.yahoo.com/tech/s/bmw-develops-street-lights-electric-car-cha<https://www.yahoo.com/tech/s/bmw-develops-street-lights-electric-car-cha> rging-sockets-122553889--finance.html Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com<http://www.proxim.com/> <http://www.proxim.com<http://www.proxim.com/>> Email: cwa...@proxim.com<mailto:cwa...@proxim.com> Private: http://www.cvandewater.info<http://www.cvandewater.info/> <http://www.cvandewater.infom<http://www.cvandewater.infom/>> Skype: cor_van_de_water Tel: +1 408 383 7626 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141205/9b3a5d38/attachment.htm<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141205/9b3a5d38/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> For EV drag racing discussion, please use 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/20141205/712b988f/attachment.htm> _______________________________________________ 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)
