Quote:
Originally Posted by FrankJ
The idea that the breaker is sized just to protect the wire is facilities logic. When you size breakers or other over current devices on a piece of equipment, like a robot, you size them for the protection of the load. You size the wire to suit.
A smaller breaker won't hurt your victor, it might save your motor.
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Sorry, FrankJ, but I respectfully disagree.
A breaker or fuse is no where near fast enough to protect a load from overcurrent (look at the trip specs).It is, instead, there to protect the rest of the wiring from an overcurrent event once a electrical failure has occurred. Thus, you size the wire to suit the load and you size the fuse/breaker to protect the wiring.