Thanks Don. I though the K3S was protected but I did a quick search of the manual for fuse and only found a reference to fusing both positive and negative cables if using a battery.
73, Tom - KQ5S On Sun, Jan 29, 2017 at 4:47 PM, Don Wilhelm <donw...@embarqmail.com> wrote: > Tom, > > The K3 and K3S 100 watt versions have a circuit breaker - that is the > round thing with the white center on the back panel of the KPA3. > The lower power circuits are protected by a resettable fuse. So the K3 is > capable of protecting itself from overcurrent. > > That being said, there is always the danger of a short or other fault in > the DC wiring that can cause excessive current in the power wire which can > spew molten metal around causing injury to anyone nearby or starting fires. > IMHO, any power supply that does not have overcurrent protection should > have a fuse located near the power source - that is especially true of > batteries which can source an enormous amount of current. > > That fuse near the power supply is not necessarily for protection of the > equipment, but rather it is for protection of your home and family. > > 73, > Don W3FPR > > On 1/29/2017 5:31 PM, Tom wrote: > >> Thanks Ron. Not sure if my old Astron 35A has built in over-current >> protection or not. I know it has the crowbar protection for over voltage. >> >> Does the K3S have any kind of internal protection like a resettable fuse? >> >> ______________________________________________________________ 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
