There's a very simple answer at http://www.faqs.org/faqs/electrical-wiring/part2/section-10.html.
Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator] >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >Behalf Of Nat Hager III >Sent: Thursday, January 23, 2003 13:14 >To: U.S. Metric Association >Subject: [USMA:24575] Re: Power > > >One more question on the same vein: > >What's 3-phase, and what's the main advantage in efficiency? (as opposed to >split-phase or "4-phase", if such a thing existed). > >I know it's universal for overland power transmission. > >Nat > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >Behalf Of Joseph B. Reid >Sent: Thursday, 2003 January 23 13:08 >To: U.S. Metric Association >Subject: [USMA:24573] Re: Power > > >>John Nichols asked in USMA 24572: >> >>I realize this is off list but why is the US 110 Volts and yet I can >>get 220 - 240 for the laundry products. >> > >Three wires are brought into the house. The central wire is neutral. >The other two carry 115 volts alternating and in antiphase. The two >live wires provide 230 V between them. There is 115 V between a >phase line and the neutral line.. >-- >Joseph B. Reid >17 Glebe Road West >Toronto M5P 1C8 Telephone 416-486-6071 > > >
