On 5/18/2019 4:28 PM, Clay Autery wrote: > 230VAC on 3 wires? Never knew they did 3 wire 220V.... I always > assumed it was still 2 hots and ground (plus an optional neutral).
In distribution service 240V "single phase" is two "hots" (usually black/red)plus neutral (usually white), with a physical ground electrode (ground rod or equivalent) at the transformer and another ground electrode at the CSED (Customer Service Entrance Device - a fancy name for the meter plus main disconnect). Those grounds do not carry load current, only fault current. Three-phase distribution obviously has three "hots" (usually black/red/blue) with neutral only if it is 120/208V wye or one of the phases of a 240V delta service is tapped for 120/240 single phase service. Separate grounds still apply. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
