Sorry, I misunderstood. You are quite right that the current drawn at the lower voltage will be double for the same power output.
Victor 4X6GP > On 15 Jul 2018, at 18:38, <j...@kk9a.com> <j...@kk9a.com> wrote: > > I did not state the fuse current rating is dependent on the voltage, only > that you will need much higher amperage fuses (according to Georg Ohm) if you > changed the wiring of a 240v amp to 120v. > > John KK9A > > From: Vic Rosenthal [mailto:k2vco....@gmail.com] > Sent: Sunday, July 15, 2018 12:58 > To: j...@kk9a.com > Cc: Elecraft Reflector > Subject: Re: [Elecraft] new owner looking for fuses. > > This is incorrect! > The current rating of a fuse is independent of the voltage. > The fuse blows as a result of heat, which is proportional to I squared times > R. > The voltage rating is just a guarantee that if it does blow, it won’t stay > conductive due to an arc. > > Victor 4X6GP > > On 15 Jul 2018, at 5:21, <j...@kk9a.com> <j...@kk9a.com> wrote: > > Correction: I believe that there are conditions where you would have 240 > volts on the fuse in a standard single phase 240v circuit so it's best to > use the standard 250v fuses. Of course 250v fuses are also fine with 120v > amp wiring but the amperage will double. > > GL > > John KK9A ______________________________________________________________ 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
