Each 2879, properly running, will pull 20A of PEAK current. About .6 times that will give you the necessary fuse value for high power AM use. For high power, highly compressed SSB, it's about the same. All about that duty cycle.
FYI, my 667 Turbo Mod, 1X4 takes 80A worth of fuse, or it blows them. Into a dummy load.
My sweet sixteen pulls 150A easily. A 165A leece neville into a BIG cap bank runs it. BARELY.
Secondly, if you want to keep a 20A fuse holder for EACH BANK, then that's OK, as well, but see my other replay about the relay keying issue / combiners / splitters / workaround. I just use a single, but when I ran doubles, I also ran a 6A10 diode from each FUSE HOLDER OUTPUT to ground.
WHY trust the wiring from the fuseholder to the amplifier, then the amplifiers traces itself to dump fault current when you can do it at the fuseholder?
BTW, those crappy glass auto fuse holders (AGC style) have a VERY small spring inside. It starts lighting up at about 15A continuous for a half hour. Would you trust pulling 40A peak across that?
--Toll_Free
