Size the wire to the motor. Size the breaker for the wire. Over loads protect motors. Breakers protect the wire. Breakers are not an on/off switch/overload protection and were never designed to be one. John
1970 Land Cruiser, 351w, NP435
(locked up front and rear)
1965 Galaxie, 428, C6, 3.89 gear,
Detroit locker
1979 Spectra Day Cruiser
stock 350ci Brand X, Mercruiser..53mph on GPS