Quote:
Originally Posted by Chris is me
Max power for these motors is usually well over 40 amps and leaves little margin for error or for your breakers to not trip.
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I'm going to go ahead and disagree with this statement. I just did the math and the only two motors that are over the 54A limit that a 40A breaker can provide indefinitely at max power are the CIM and 775pro. Both of these draw about 65A. For all other motors, you can run them at max power (i.e. 50% free speed) indefinitely on a 40A breaker. The BB-RS775 is close at 50A, but I wouldn't be worried too much because the breakers don't trip immediately, they take a few seconds, especially when the current is only slightly over the limit.
Those three exceptions aside, you can run all of the other motors at max power without really worrying about tripping breakers. Whether you actually want to depends a lot on how big of a FoS you want and what options you have as far as motor choice.