Originally posted by Cappuccino911:
When in doubt, always go with a fuse rated lower. That way, you blow a fuse way before you blow an amp!!! I'm not sure how many amps the fuse under my hood is but I know that 70 or 80 amps in the dist box sounds way too high! How many power lines are coming out of your dist block? I have 2 amps being powered and each one has an oversized 20 amp fuse. Also, amps often blow up without anything happening to those mini fuses in them so dont rely on them to protect your system!
Well, the amp has three 25-amp fuses, which the manufacturer says equals 75 amps. 400W=I^2*4Ohms, so I (current in amperes) is 10. However, I chose computer science over electrical engineering, so I'm not really sure if this works here. How many watts are your amps?
There will be two lines out of the dist block: one 4AWG for the amp, and one 8/10AWG for the crossover. The dist block itself doesn't have a fuse, so I was planning on splicing in my own right before the amp.
