Which article provides standards for fixture wires?

The standards for fixture wires are detailed in Article 402 of the National Electrical Code (NEC). This article specifically addresses the requirements and guidelines surrounding the installation and use of fixture wires, which are flexible conductors designed for connecting light fixtures and other types of lighting equipment.

Article 402 focuses on the construction, materials, and usage limits of fixture wires, ensuring that they are appropriate for the environments in which they will be used, such as inside buildings or in other contexts where they may be subject to wear or exposure. It also includes provisions regarding the proper ratings for heat and current-carrying capacities, which are crucial for ensuring safety and functionality in electrical installations.

The other articles listed pertain to different aspects of electrical installations. Article 390 deals with pull and junction boxes, Article 396 addresses any kinds of overhead conductors, and Article 399 covers the requirements for outdoor conductors. Each of these articles has its specific focus, which is why Article 402 is the appropriate reference for standards related to fixture wires.