What article in the National Electric Code covers motors, motor branch-circuit and feeder conductors and their protection?

• A. Article 430
• B. Article 100
• C. Article 250
• D. Article 310

Answer: (A)

Wiring and protecting motors requires following a specific NEC article that focuses on motor circuits. This article provides the rules for sizing the conductors that feed motors, selecting the appropriate overcurrent protection, and the requirements for motor controllers and starting methods. It addresses how branch-circuit and feeder conductors for motors must be protected and installed, taking into account motor start-up currents and operating conditions. The other articles cover definitions, grounding and bonding, or general conductor rules, not motor-specific wiring. So the article that covers motors, motor branch-circuit and feeder conductors and their protection is the one dedicated to motors.