Example of a Motor Control Circuit tapped from the Motor Short Circuit and Ground Fault Protective Device that Exits the Motor Controller.

 

This is a tapped Motor Control Circuit and the tapped conductors leave the enclosure.  The overcurrent protection rules are in Section 430.72(B)(2) and Table 430.72(B) Column C

Motor Control Diagram No. 3
Problem:

If Fuses at A are 25 amperes what is the minimum size copper conductors that can be used if the control circuit Exits the motor control enclosure?

Solution: Using Section 430.72(B)(2) and Table 430.72(B) Column C allows a No. 14 conductor. (Use Motor Control Diagram No. 3)
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