malachi constant
Senior Member
- Location
- Minneapolis
Gymnasiums equipment provider supplied controls that take a 30A/1P input and control up to four relays. Backstop motors are 11.5 FLA. We would like to run #12s from motor to relay, and run two of these off the 30A breaker with #10s between breaker and relay controls. [With breaker sized at (125% x 11.5A) + 11.5A = 25.9A, have to round up to 30A breaker.]
Is it OK to protect the pair of 11.5A motors and associated #12 wires using the single 30A/1P breaker? I believe so because overload protection for the motors should be located at the motors (so #12s are OK), and per 430.52 we can go up to 250% of motor FLA (which is 11.5A x 250% = 28.75A, and per exception #1 you can round up - so 30A breaker is OK).
I think we are good here but seems like every time I ask about this kind of situation I learn another wrinkle. Your thoughts are appreciated!
Is it OK to protect the pair of 11.5A motors and associated #12 wires using the single 30A/1P breaker? I believe so because overload protection for the motors should be located at the motors (so #12s are OK), and per 430.52 we can go up to 250% of motor FLA (which is 11.5A x 250% = 28.75A, and per exception #1 you can round up - so 30A breaker is OK).
I think we are good here but seems like every time I ask about this kind of situation I learn another wrinkle. Your thoughts are appreciated!