That helps a lot. My dist block has fuses in the middle. It has receptacles for 2 4ga power wires in and 4 4ga wires out. In the middle of the block are fuses. I have 20 amp fuses in there. Like I said in the earlier post, when in doubt, use lower rated fuses. The worst that will happen is that you blow more fuses. You don't want to start letting too much current get through and fry your amp. Just put a 20-40 amp fuse in between the power coming out of the disti block and the one going into the amp and you will be good!