Quote:
Originally Posted by PAR_WIG1350
Breaker/fuse size should be selected based on the wire used, not the expected current draw. Overcurrent protection is used primarily to prevent the wires from overheating and setting things on fire. ....
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That is really building wiring philosophy or for situations where you don't know what the downstream loads are going to be. The assumption there is the machine designer will design his equipment to handle the over current. Even there I have downsized breakers to match the equipment where I specified over size wiring because of the voltage drop. In machinery where you know the current demands, good practice is to size the fuses for the load. Cars are a good example of this.
A little late now, but you can buy fuse blocks so you can individually fuse the circuits. ATC style fuse blocks can be had for cheap. Cross the Road recomends strongly that their motor controller have circuit protection.