Hey guys,
I just have a quick question regarding a build that I'm gonna do.
I'm gonna be installing a 4-channel amp for my speakers and a monoblock amp to power my subwoofer.
First I'm going to use a 0 gauge cable from the battery to a distribution block. Then I'm going to use an 8 gauge cable from the distribution block to the 4 channel amp and a 4 gauge cable from the distribution block to the monoblock amp.
What I am not sure about are the types of fuses I need to use. I'm thinking of using a 350A fuse between the battery and distribution block, a 100A fuse between the distribution block and 4 channel amp, and a 150A fuse between the distribution block and monoblock amp.
Am I thinking along the right lines or should I do something different?

 

Depends how big your amps are. What are they? Did they not come with a recommended fuse size?

 

The 4 channel amp puts out about 380 watts RMS at 4 ohms and the monoblock outs out about 870 watts RMS at 2 ohms.
The amps have their own fuses but I'm under the impression that you are supposed to use a fuse for every wire connection to make sure that you don't send more current than the wire can handle.

 

Get yourself a fused distribution block is what i would be looking for. Correct that you fuse the wire for it's rated current carrying capacity. The amp has it's own fuse to protect it. The shorter the length of wire is, the higher it's capacity will be. That said, if the 4 channel amp has a 30 amp fuse in it, a 100 amp fuse on the 8 gauge line might be a little on the overkill side. Nothing wrong with using a smaller fuse, yet still larger that what is in the amp.

 

Yep, oversize the distro block fuse a little over the amp fuses.