Jack - great answer, many thanks for clearing it up for me. Our home was built in ‘91 so I would guess that it is fairly up to current code, wire-wise. Guess I’ll save my $600 for something else. Maybe a trip to the casinos in Tahoe! Or paying some bills. Hmmmmm... :-)
Jim Bennett / W6JHB Folsom, CA > On Dec 12, 2018, at 4:44 PM, Jack Brindle <[email protected]> wrote: > > James; > > There would be no difference in the heat generated inside the KPA500 since > the KPA’s transformer is delivering the same voltage and current in either > case. The entire difference would be voltage drop on the power line and KPA’s > power cord due to the higher current at 110V. The losses are I*I*R, where I > is the current and R the power line resistance. Noting that the current is > double for 110V, the heat losses in the power line will actually be > quadrupled. > > If you have #12 wire in your walls (the current NEC code), and use the > supplied power cord, things should be just fine. > > 73! > Jack, W6FB > >> On Dec 12, 2018, at 4:27 PM, James Bennett via Elecraft >> <[email protected]> wrote: >> >> I’ve wondered the same thing here. While I don’t have the flashing lights >> that Dennis NJ6G does, I DO have a ton of other things plugged in to >> outlets in this room. >> >> Am I off in left field on this: if the amp were to run on a 220 circuit it >> would obviously draw half the current, and thus (to my uneducated brain) >> less current “might” mean less heat generated and a lower temperature inside >> the unit. Does that make sense? >> >> I had an estimate from a licensed electrician who said it would run me about >> $600 to put a 220 outlet in the shack, due to it’s distance (and obstacles >> in the way) from the electrical entry panel. >> >> Kinda pricy, but eliminating some heat in the shack and keeping the KPA500 >> fans running slower would be nice…. >> >> Jim / W6JHB >> >>> On Dec 12, 2018, at 4:13 PM, Tom Berry <[email protected]> wrote: >>> >>> Is there any advantage to use 220 V over 110 V on the KPA500? >>> >>> Is it worth having an electrician come to the house and install a 220 V >>> outlet for it? >>> >>> >>> Thanks >>> >>> Tom AA4VV >>> >>> ______________________________________________________________ >>> 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] > ______________________________________________________________ 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]
