[Al Skierkiewicz]

Please be advised that the breaker choice is not dependent on the load but the wire size you choose to feed the load. Breakers are matched by wire size in the rules. That is the only rule you must follow.
As a general rule, I recommend feeding drive motors, particularly CIM motors with #10 wire and 40 amp breakers, #12 can be used but only on lengths less than a few feet. You can choose your own design of course but a rule of thumb I came up with a few years back is the "wire foot". This is a rule that relates voltage drop at 100 amps with wire length and size.


Wire Foot(WF)
Equivalent to loss in 1 foot of #10 wire.
At approximate stall current of the three large motors, or about 100 amps, this is equivalent to 0.1volt/wirefoot(WF).
1 ft. of #6 wire = 0.5 WF
1 ft. of #10 wire = 1 WF
1 ft. of # 12 = 1.7 WF
1 ft. of # 14 = 2.5 WF
Battery Internal Resistance = 11 WF
Victor Series Resistance = 6 WF
Jaguar Black=2-3 WF
Bad crimps = 1-3 WF each
Remember, there are two wires in every circuit, positive and negative so add all wire length to your calculation.