Quote:
Originally Posted by artdutra04
Even through CIM motors are usually on 40A breakers, they can draw significantly more current for brief periods of time. The breakers do not trip instantly at 40.00001A, they trip after X seconds depending on the ambient temperature and current being drawn. Thus, your slip rings should be rated to handle the stall current of a CIM motor. |
The 12 gauge wiring required by FRC rules for circuits on 40A breakers is also only rated for ~40A. The breaker is designed to trip in a way that reflects how the wiring is heating up. I imagine the conductors in a slip ring have similar behavior and can be similarly rated and protected by the breaker. Basically, if the wiring only needs a 40A rating (130A would require 4 gauge wire...), then a slip ring should be fine with that as well. Please correct me if this reasoning doesn't work.
Can someone chime in on any differences between these parts of the circuit and their current ratings?