Motor circuits and controllers are governed by which NEC article?

• A. Article 210
• B. Article 334
• C. Article 230
• D. Article 430

Answer: (D)

Motor circuits and controllers are addressed in a single NEC article that focuses specifically on motors, motor circuits, and their controllers, including the required disconnecting means and motor overload protection as well as the related control circuits. This specialization makes it the best answer because it directly governs how motors are powered, protected, and controlled in electrical installations. Other NEC sections cover different topics: branch circuits for general lighting and receptacles, wiring methods for nonmetallic-sheathed cables, and service conductors and service equipment. So for anything involving motors and their control equipment, Article 430 is where the relevant rules live.