Which article covers air-conditioning and refrigerating equipment?

Article 440 of the National Electrical Code (NEC) specifically addresses the requirements for the installation and maintenance of air-conditioning and refrigerating equipment. This article outlines the rules for electrical components and systems associated with these types of equipment, including wiring methods, disconnecting means, and branch circuit conductors. Understanding the scope of Article 440 is crucial for ensuring compliance with electrical safety standards when working with HVAC (Heating, Ventilation, and Air Conditioning) systems.

The other articles listed do not pertain explicitly to air-conditioning and refrigeration. Article 450 focuses on the storage and handling of transformers and capacitors, while Article 460 deals with commercial and industrial motors. Article 470 addresses power conversion equipment. Each of these articles serves a different purpose within the NEC, highlighting the importance of referencing the correct article for specific electrical equipment and installations.