[Elecraft] Need a Fuse on the K3's Power Line?

Edward R Cole kl7uw at acsalaska.net
Fri Jun 14 13:05:31 EDT 2013


Like Ron, I do not have a fuse on the power line to my K3/10.  I 
guess the 6A fuse is internal with the K3 (have never replaced it).

I do supply my whole station with 14.2vdc from an Astron R50M via 
12-feet of No. 6 welding wire which has a 30A BUSS Fuse at the main 
distribution point on the back of the radio cabinet (under heavy load 
the voltage runs at 13.8 at this point).  Power splits off to several 
barrier strips for connection to various equipment.  The high current 
(high power) loads are directly connected to the main strip at the 
main fuse to reduce line loss.  Many of my equipment are individually 
fused.  The R50M output is fused at the PS.

I have blown the 30A fuse only a couple times (over many years use) 
by accidental shorts on the 12v system (but usually a momentary short 
does not draw sufficient current to blow the big BUSS fuse).  I do 
not recall the Astron fuse ever blowing.

73, Ed - KL7UW
http://www.kl7uw.com
dubususa at gmail.com
"Kits made by KL7UW" 



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