Which article addresses overcurrent protection requirements?

The National Electrical Code (NEC) outlines specific articles that focus on various aspects of electrical installations, and Article 240 specifically addresses overcurrent protection requirements. This article is crucial because it sets the standards for the proper protection of conductors and equipment from excessive current that could cause overheating or damage.

Overcurrent protection is essential in preventing electrical hazards, including fires and damage to electrical equipment. Article 240 includes guidelines on the types of devices that can be used for overcurrent protection, such as circuit breakers and fuses, and specifies how these devices should be rated according to the system's characteristics and load demands.

Additionally, Article 240 discusses the coordination of overcurrent protection devices to ensure that only the device closest to the fault will trip, minimizing the impact on the larger electrical system. This coordination is vital in maintaining the integrity and reliability of the electrical distribution system.

In relation to the other articles mentioned, while Article 210 deals with branch circuits and Article 220 pertains to load calculations, and Article 250 focuses on grounding and bonding, none of these articles specifically govern overcurrent protection in the way that Article 240 does. Therefore, Article 240 is the authoritative source for understanding and implementing proper overcurrent protection measures in electrical systems.