Which type of raceway is categorized under Article 368?

The correct answer is busways. Article 368 of the National Electrical Code specifically addresses the installation and requirements for busways, which are power distribution systems that consist of metal enclosures containing a series of power conductors. Busways are designed to conduct electrical current and are commonly used in commercial and industrial settings where large amounts of power need to be distributed over a short distance. They provide a compact, flexible, and efficient means of distributing electrical power, allowing for easy adjustments and expansions in a facility.

Other options, like conduits, cable trays, and surface metal raceways, fall under different articles in the NEC. Conduits are covered in Article 300, focusing on their installation and use for protecting wires from physical damage. Cable trays, which support insulated conductors, are typically addressed in Article 392. Surface metal raceways, which provide a way to run wiring on surfaces while protecting it, are usually discussed under Article 376. Each of these raceways serves distinct applications and follows specific regulations, highlighting the importance of referencing the appropriate article for each type.