PDF or printed copy will cost you! But I have searched for a topic on forums such as Mike Holt's and they usually list a paragraph number. The online version has a table of contents so you can go there once you know the paragraph number.
73, Mark W7MLG On Mon, Jul 9, 2018 at 6:35 PM, James F. Boehner MD <jboehne...@yahoo.com> wrote: > WOW! > > Thanks for that link! Now just to find it in PDF. > > '73 de JIM N2ZZ > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg > Sent: Monday, July 09, 2018 8:27 PM > To: hawley, charles j jr > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Breakers for KPA1500? > > Actually, if you look at the NEC (National Electrical Code), they have > factors for ambient temp and wire temp ratings. Other codes around the > world are similar. > > For example, if you use AWG 12 Type UF cable, the base rating is 20 Amps. > With the temperatures we have in Arizona, where it can get above 140F in an > attic, they have a correction factor of 0.71 if the wire is rated to 90C. > So it should only be used up to 14.2 Amps. If you are installing from > scratch, I would go to AWG 10 just for a safety factor. Of course, you may > not be here in Arizona. It actually may get hotter than that here in some > attics. > > You can read the NEC for free by going here and signing up. It will tell > you more than you want to know, in excruciating detail. A copy will cost > ya, but I have found the online interface good enough to find things. > > https://www.nfpa.org/codes-and-standards/all-codes-and- > standards/list-of-cod > es-and-standards/detail?code=70 > > 73, > > Mark > W7MLG > > > On Mon, Jul 9, 2018 at 4:49 PM, hawley, charles j jr < > c-haw...@illinois.edu> > wrote: > > > How many watts of heat does the average attic have in the summertime? > > > > Chuck > > KE9UW > > > > Sent from my iPhone, cjack > > > > > On Jul 9, 2018, at 6:39 PM, Josh Fiden <j...@voodoolab.com> wrote: > > > > > > If wire run ends up being 50' you could see a 2V drop at 13A. Agree > that > > switching supply in amp won't care. 26W of heat in the wire inside a wall > > would bug me. > > > > > > 73 > > > Josh W6XU > > > > > > Sent from my mobile device > > > > > >> On Jul 9, 2018, at 3:12 PM, Roy Koeppe <k...@ncn.net> wrote: > > >> > > >> The KPA1500 uses a regulated power supply: input 195 to 250 vac. > > Voltage loss in #12 wires is so small the regulator will laugh at that. > > >> > > >> 73, Roy K6XK > > >> > > >> > > >> "I would also suggest using three - #10 with ground as the line from > > the > > >> breakers to the amp operating position." > > >> > > >> 73 > > >> > > >> Bob, K4TAX > > >> > > >> > > >>> On 7/9/2018 11:43 AM, Roy Koeppe wrote: > > >>> Yes, that is what I am using. > > >>> > > >>> 73, Roy K6XK > > >>> > > >>> > > >>> I probably missed this but my google searches aren't working either. > > >>> > > >>> Will 2x 20A breakers (220v) be sufficient for the KPA1500? > > >>> > > >>> > > >> > > >> > > >> ______________________________________________________________ > > >> 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 j...@voodoolab.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 c-haw...@illinois.edu > > ______________________________________________________________ > > 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 marklgoldb...@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 jboehne...@yahoo.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 arch...@mail-archive.com
