Article 240 in the National Electrical Code ensures what aspect of electrical systems?

Article 240 of the National Electrical Code (NEC) focuses specifically on overcurrent protection in electrical systems. This article outlines the requirements for protecting conductors and equipment from the effects of overcurrent, which is a condition that occurs when the current exceeds the rated capacity of the conductors or equipment.

Overcurrent can result from various scenarios, including short circuits, ground faults, or overloads, and without proper protection, it can lead to detrimental effects such as equipment damage, increased fire hazard risks, or potential injury. Article 240 provides guidelines for using circuit breakers and fuses to effectively manage overcurrent, specifying factors like the rating of the devices, appropriate sizing according to the conductors used, and the coordination of protective devices to ensure safe operation.

This article is critical in ensuring safety and reliability in electrical installations by mandating that adequate overcurrent protection is provided. Other choices represent related but distinct aspects of electrical systems or requirements under different articles within the NEC.