When I installed my Massive P1000.1 amp, I also got a 2 gauge Amp Kit that came with a 80A fuse. I just read the Massive's owners manual, it recomends a 60A fuse. Does using a 80A over a 60A make any difference?

When I had my system running, I had the amp powering a SI Mag @ 1 ohm (880W).

That fuse is designed to keep the wire from melting in the event of a short. As long as it's properly sized for the wire, you don't have a problem.

You could run a lower amperage fuse (assuming there's nothing else drawing power, there isn't a front stage amp?) but *never* a higher rated one...

So the fuse is more for the wire and not the amp, and that 80A fuse is for the 2gauge wire? Or I'm interpreting things wrong, and I should get rid of my 80A and get a 60A fuse even though it's 2gauge wire?

And I had a front stage, it's a small amp that uses a 25A fuse and 8 gauge wire.

Edited August 14, 200718 yr by king alpha

Fuses on the wires... for the wire.

Fuses on the amp... for the amp.

How long is this 2ga. wire? Current carrying capacity is determined by the cross section of conductor & the length of the conductor.

Fuses on the wires... for the wire.

Fuses on the amp... for the amp.

How long is this 2ga. wire? Current carrying capacity is determined by the cross section of conductor & the length of the conductor.

Cool, that makes sense. And I think my wire is about 6-7ft (I'm just guessing). It's a 95 Ford Mustang, and the wire is goes from the battery and to the trunk. I just got the car back from the shop and I'm in the process of putting the sounds back in, but misplaced the fuses. Once I get this settled, I'll buy the proper fuse.

Has to be more than 6-7ft then... Try closer to 17-18ft.

2ga. wire, that long, requires around 150-175A of fusing.