Amp Wiring/fuse question Options

[djrob90]

Right, I’ve got 4 amps, 4 10” subs and 2 powercaps. The intention is to run the amps off of a FUSED distribution block (1 into 4) and another distribution block for the caps (1 into 2) My old setup of 2 amps required a 30amp fuse and 40amp fuse on the block and there was a 70amp fuse on the main 4 gauge cable really close to the battery. My question is that now, aside from these 2 amps, I’ve got a further 2 amps that require a 40amp fuse and a 60amp fuse, this takes the total amps upto 170 and will obviously blow the 70amp fuse in the main cable. I’ve never seen any AGU fuses rated this high and I was wondering, am I being overkill with the fuse in the battery splice (as everything else is individually fused) or should I not be pulling this sort of amperage from one piece of 4 gauge and should I run another piece instead?

[AudioFreak]

Someone's math is way off, as 150 amps is around 14,000 Ws
[right][snapback]228650[/snapback][/right]

I think your math is off.

Wattage divided by voltage = amperage

14000w / 12v = 1166.66amps

And that formula is in a perfect world where amplifiers are 100% efficient.(which they are not, the heat they produce is wasted energy)