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Re: FP burning out
Circuit breakers don't trip immediately when the current exceeds the limit. It takes time for the materials inside to heat up and open the circuit. The more current you put through it, the faster it heats up and the shorter time it takes to open the circuit.
If you look at the spec sheet for the 20 & 30 amp breakers, you'll see that it takes them between 3 and 6 seconds to trip at 200% of thier rated current. The 40 amp breaker would take even longer to trip. Thus, you were able to burn out the motor before the breaker tripped. That is one reason that FIRST requires a 30 amp breaker on the FP motors, rather then a 40.
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