I have a 400W amp w/ crossover that I'm powering through 4AWG cable running from the battery. The wiring kit I bought came with a 150 amp fuse for the fuse holder by the battery. The amp is equipped with three 25 amp fuses (75 amps total?).
The manufacturer says that I should use an 80 amp fuse by the battery, and another 80 amp fuse right in front of the amp (after the distro block). Does that sound right? Wouldn't it be safer to put a 70 amp fuse right before the amp, so that it blows before the fuses in the amp do? Or would that be too small and blow all the time?
