Which article covers flexible cords and cables?

• A. Article 300: General wiring methods.
• B. Article 410: Luminaires and lighting equipment.
• C. Article 422: Appliances and appliance circuits.
• D. Article 400: Flexible cords and cables.

Answer: (D)

Flexible cords and cables have their own NEC article that sets the rules for how these cords are constructed, rated, and used, including how they’re installed and protected. This article specifically covers what kinds of flexible cords and cables can be used, where they can be used, limits on protection and strain relief, and other usage restrictions. That focused scope is what makes it the best answer for a question about which article governs flexible cords and cables.

The other articles address different topics: one covers general wiring methods for conductors and installations, another deals with luminaires and lighting equipment, and another relates to appliances and appliance circuits. None of those focus on flexible cords and cables, so they don’t match the subject as directly.