Per the manual 50% efficiency. So at 1500 watts output the. input would be abt 3Kw. A 20 amp ckt at 240 V would supply 4.8 Kw. Seems reasonable to have adequate power for other equipment.
Bob, K4TAX Sent from my iPhone > On Jul 10, 2018, at 12:34 PM, "[email protected]" <[email protected]> wrote: > > I based that statement on the 20amp KPA1500 rating shown on page 28 of > their manual. Obviously this is incorrect or it is very inefficient, but > still a station can have multiple heavy duty rotators, computers, multiple > transceivers, etc. > > http://www.elecraft.com/manual/E740301%20KPA1500%20Owners%20Manual%20Rev%20A8.pdf > > John KK9A > > > Jim Brown jim at audiosystemsgroup.com > >> On 7/10/2018 9:13 AM, john at kk9a.com wrote: >> Yes you can run three conductor >> Romex and have a 120v and 240v outlet but I do not see this as a good plan >> as it could easily exceed 20 amps on one leg. Upgrading to higher amperage >> circuit and you'll exceed the amperage rating for a standard 120v outlet. >> Two separate circuits are much easier to manage. > > It's hard to imagine how 20A on a 240V circuit split to 120V outlets > (with neutral) could be exceeded in a single operator ham station > running legal power, and powering only ham gear from that circuit. Let's > say that the power amp is drawing 15A keydown. That's 3.6kW, and you > still have 5A at 120V on each of the two legs. Now, let's say that you > have an Astron 14.4V supply running on one of those outlets powering a > tranceiver, even two or three tranceivers, only one of them TX at a > time. I find it hard to believe that the Astron draws more than 3A, > probably less. Add an old big iron computer to the other leg, maybe 1A > on that leg. Indeed, a second power amp could be running off that > circuit as long as only one is in TX mode at a time! > > 73, Jim K9YC > > ______________________________________________________________ > 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 > Message delivered to [email protected] > ______________________________________________________________ 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 Message delivered to [email protected]
