In electrical systems, what does Article 398 address specifically?

Article 398 specifically addresses "Open Wiring on Insulators," which refers to the use of insulators to support conductors in electrical systems that are exposed to the elements. This type of wiring must adhere to certain safety standards outlined in the National Electrical Code (NEC) to prevent hazards such as short circuits, electrical fires, or falling conductors. Open wiring on insulators is typically used in outdoor settings or in locations where traditional conduit wiring may not be practical.

The definitions and requirements in Article 398 help ensure that installations using this method are safe, durable, and reliable. It covers aspects such as the materials that can be used for insulators, the spacing required for conductors, and guidelines on how to install such systems effectively. Understanding these details is critical for electrical professionals to ensure compliance with regulations and to promote safety in their work.