said by Coin chaser:You could change them out for 20amp fuses and get two 20amp feeds. Use 12ga wire and 20amp outlets/switches,etc. The size of the fuse dictates the size of the circuit. You could put 4 wires to one 30amp fuse but it is still a 30amp feed.
I think you misunderstood what he said. His wording was a bit confusing, but I don't think he's planning on connecting four wires directly to the two fuses.
From what I got, he's planning to do this:
Two 30A fuses -> two wires -> sub-panel with 4 breakers -> four wires -> outlets.