I have two JBL amps and a Coustic crossover. One amp has(2)30A fuses and the other has (2)20 amp fuses. The crossover is not fused. According to the owner's maunuals, the maximum current draws are 57A, 43A, and .5A for a total of 100.5 amps. These amps do a total of 760 watts rms. What size fuse do I need on the main power lead?