Which project code governs outdoor electrical installations?

The correct choice focuses on NEC Article 300, which addresses general requirements for wiring methods and materials, including provisions for outdoor electrical installations. This article outlines necessary considerations for ensuring safety, performance, and durability when installing electrical systems exposed to outdoor elements.

Outdoor installations require specific standards to prevent issues such as moisture ingress, temperature fluctuations, and physical damage from environmental factors. NEC Article 300 provides guidelines on methods for ensuring that wiring is adequately protected, supported, and installed in a way that minimizes risks associated with exposure to these conditions.

In contrast, NEC Article 100 primarily covers definitions and terms used throughout the National Electrical Code, and Article 200 pertains to the use and installation of conductors, while Article 400 focuses on flexible cords and cables. These articles do not specifically address the requirements for outdoor installations, making NEC Article 300 the most relevant choice in this context.