Which article of the NEC is concerned with Busways?

Busways, which are a type of electrical distribution system formed by bus bars enclosed in a protective housing, are specifically covered under Article 368 of the National Electrical Code (NEC). This article outlines the requirements for busway systems, including installation practices, ampacity ratings, and safety considerations. It addresses various configurations and service ratings that are critical for engineers and electricians to understand to ensure safe and effective electrical distribution in commercial and industrial applications.

The other articles mentioned do not pertain to busways; for instance, Article 300 deals with general requirements for wiring methods and materials, Article 400 addresses flexible cords and cables, and Article 680 covers the requirements for swimming pools, fountains, and similar installations. Thus, for matters specifically dealing with busways, Article 368 is the authoritative source in the NEC.