Which section of the NEC addresses outdoor and special-purpose installations?

The section of the National Electrical Code (NEC) that addresses outdoor and special-purpose installations is Article 600. This article specifically deals with the installation of equipment and systems in an outdoor setting, including architectural and decorative lighting, signs, and other specialty electrical services that may be necessary for outdoor environments.

Understanding that outdoor installations have unique safety and performance requirements is crucial. Therefore, Article 600 highlights these concerns and provides the necessary guidelines to ensure proper installation and function in potentially challenging conditions, such as exposure to the elements. This includes considerations for weather resistance, grounding, and protection from physical damage.

The other articles listed do not encompass the specific focus on outdoor and special-purpose installations as comprehensively as Article 600 does. Article 200 pertains more to general circuit requirements, Article 400 discusses flexible cords and cables, and Article 500 focuses on hazardous locations. Hence, for anything involving outdoor electrical work or specialty installations, Article 600 is the correct reference point in the NEC.