Well that block will make things much easier. I'm going to draw it out lol So, lets say heres the block I I I I I I I I I I I I I I You could just place 3 500a fuses, you could do 6 150s, etc. There are many options. Remember, fuses aren't as crucial as they may seem. With that large of a system, I'm going to "assume", you know some what of what you're doing, so as long as you don't connect the pos and neg of the same battery, and say Oops, then you're fine man. That amp is rated to pull a MAX of 500amps. But you will never see this in real life. I would say, a 300 amp fuse per 5500 would do just fine. So that would be like, two 150s per amp basically, or one per hot wire.