A:AnswerYes, technically you can HOWEVER you would more than likely draw more current than a 8ga wire could handle and that's why they say 4ga in 8ga out. Think about it, you have 2 8ga on the output each pulling there own current from the same input wire.
A:AnswerNo. Distribution blocks are designed to distribute power (+) OR ground (-). Personally I would only use this distribution block for ground (-). Look into one with a separate fuse for each amp if using it for power (+).
A:AnswerI dont see why this would be an issue. If you run 4 gauge into them you can go smaller coming out depending on the needs of your amps. I went 1 in and 4 out on both of my distribution blocks. These don't regulate power just split into smaller wires. You'll still have 12v going through it.
