Which NEC article covers overcurrent protection?

The National Electrical Code (NEC) Article 240 specifically addresses overcurrent protection. This article outlines the requirements for protecting conductors and equipment from damage due to excessive current, which can occur during overload conditions or short circuits. It establishes guidelines for the selection, installation, and maintenance of overcurrent protection devices such as fuses and circuit breakers.

By detailing the types of devices that can be used, their ratings, and their proper locations in the electrical system, Article 240 is fundamental for ensuring electrical safety. It also emphasizes the importance of coordination between the overcurrent protection devices to minimize the impact of faults on the electrical system and improve reliability.

The other articles listed cover different aspects of electrical installations; for instance, Article 210 focuses on branch circuits, Article 300 covers general wiring methods and materials, and Article 400 discusses flexible cords and cables, making them less relevant to the subject of overcurrent protection.