Article 398 focuses on which type of wiring?

Article 398 of the National Electrical Code (NEC) specifically addresses Open Wiring on Insulators. This article sets forth the rules and guidelines for the installation of open wiring systems, which are often found in applications where overhead lines are used. Open wiring is typically installed on insulators that provide electrical isolation and mechanical support for the conductors, ensuring safety and reliability in various environments.

In the context of NEC standards, Article 398 outlines requirements such as the types of materials that can be used, the proper spacing between conductors to prevent contact, and various safety measures to protect against environmental factors. This article is essential for ensuring that open wiring operations meet safety codes and are adequate for their intended use, particularly in outdoor and industrial applications.

Understanding this article is crucial for those working with overhead power distribution since compliance with its specifications helps reduce hazards associated with electrical installations.