Which type of raceway is categorized under Article 368?

Busways are outlined in Article 368 of the National Electrical Code (NEC) because this article specifically pertains to high-current distribution systems. Busways are typically used for distributing electricity in commercial and industrial settings, providing a flexible and efficient way to deliver electrical power to various locations without using traditional wiring methods.

Article 368 encompasses the requirements for the installation, construction, and performance of busways, which are designed to safely carry a high current and ensure reliable power distribution. This includes regulations around materials, protection from physical damage, grounding, and the overall assembly of these systems.

In contrast, conduits, cable trays, and surface metal raceways each fall under different articles in the NEC, focusing on their specific construction standards, applications, and installation methods. Conduits are generally covered under Article 300, cable trays are discussed under Article 392, and surface metal raceways under Article 376. Understanding the categorization of different types of raceways according to NEC Articles helps ensure that installations comply with safety and performance standards appropriate for their applications.