U.S. electrical utilities comply with ANSI C84.1-2011 which specifies a steady state service voltage of 120/240 volts +/- 5% measured at the point (typically the meter) where the electric systems of the supplier and the user are connected.
Excursions of limited extent, frequency and duration to 110-127 volts are acceptable. Momentary transient under and over voltage excursions well outside this range are allowed. NEMA -- the National Electrical Manufacturers Association -- recommends that all electrical appliances and motors operate at 120 volts +/- 10% although not necessarily at an optimal condition beyond +/- 5% 73 Frank W3LPL ----- Original Message ----- From: "Joe Subich, W4TV" <li...@subich.com> To: elecraft@mailman.qth.net Sent: Thursday, March 29, 2018 1:40:55 PM Subject: Re: [Elecraft] KPA500 power supply > (not sure why we call it 220, 'cuz i think it's actually 230v) Because the original standard was 110/220V ... as power consumption has increased and distribution utilities have attempted to reduce losses it crept up to 112/224, then 115/230, 117/234 and now runs 120/240 in many locations. 73, ... Joe, W4TV On 3/29/2018 9:19 AM, Chris Hallinan wrote: > As others have commented, the amp works just fine on 110v. In my case, > every dit and dah resulted in a slight but noticeable dimming of the lights > in my shack and an adjoining room. After putting in a dedicated 220V > circuit, (not sure why we call it 220, 'cuz i think it's actually 230v) no > dimming at all, and no complaints from the better half! ;) > > 73 de K1AY > Chris > > On Thu, Mar 29, 2018 at 2:17 AM, Dennis Haarsager <haarsa...@gmail.com> > wrote: > >> I am ready to order a KPA500 and wonder if anyone out there has regretted >> operating one from 115-volt service. >> >> Thanks and 73, >> Dennis, at the moment CT9/N7DH >> >> Sent from my iPhone >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to challi...@gmail.com >> > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donov...@starpower.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
