Oh ok I plan on using a 4 gauge kit and I ordered the 12 circuit one on Amazon so I should see it Tuesday just have to figure out the wire kit and how I'm going to install it.You want to make sure the fuse protects everything else so it should be rated for less than anything else in the circuit. In my case, the fuse block is only rated for 100amps so a 100amp fuse would be max otherwise the fuse block could fail before the fuse. Also the wire gauge will determine fuse size. I think 8 gauge wire is only rated for 50 amps. For 100amps 6 or 4 gauge wire would be needed.
If you look for a kit that has 6 gauge wire, it would probably come with a higher rated fuse.












