[Al Skierkiewicz]

jalmos,
There is no rule that requires #12 wire for drive motors. The only rule is that quoted above that matches wire size and breaker selection. Do you have #12 wire? I highly recommend that you change the wire rather than the breakers. The smaller wire adds resistance and therefore lowers the available power you can deliver to the motor. I recommend that teams use #10 for drive motors and keep wire runs to minimum for motors that require high power, i.e. CIMs and FP motors.