What does Article 225 cover in the National Electrical Code?

Article 225 of the National Electrical Code specifically addresses Outside Branch Circuits and Feeders. This part of the code provides the requirements and guidelines for electrical installations that occur outside of buildings, focusing on circuits that supply power to exterior equipment, outdoor lighting, and other instances where wiring traverses outside of a structure.

This article is important as it ensures that all outdoor electrical installations are performed safely and effectively, mitigating hazards such as overheating, moisture ingress, and exposure to environmental factors. It covers aspects such as the proper installation methods for conductors, cable ratings for outdoor use, and the necessary protection against physical damage, all tailored to the unique challenges presented by outdoor environments.

The other options relate to different aspects of electrical installations: services focus on the points of utility supply; grounding and bonding are concerned with safety and equipotential connections; and overcurrent protection deals with preventing excessive current that could cause damage. Each of these topics is important in its own right, but only Article 225 is dedicated to the specific requirements for outside branch circuits and feeders, making it crucial for those working with external electrical systems.