Which article in the NEC® provides requirements for the installation of refrigeration equipment?

The article that provides requirements for the installation of refrigeration equipment is Article 440 in the National Electrical Code (NEC®). This article specifically addresses the installation standards necessary for air conditioning and refrigeration equipment, focusing on factors such as wiring methods, load calculations, and safety considerations related to the operation of these systems.

Understanding the context of refrigeration equipment requires awareness of the specific electrical systems managed under Article 440. This includes not only the selection and installation of equipment but also how these installations interact with the broader electrical system in terms of efficiency and safety.

The other articles available in the choices focus on different aspects of electrical installations. For example, Article 430 pertains to motors, motor circuits, and controllers, while Article 460 deals with capacitors and Article 470 outlines requirements for surge protective devices and similar technologies. Therefore, these other articles are not relevant to refrigeration equipment. Article 440 is the appropriate reference for ensuring that refrigeration systems are safely and effectively integrated into electrical installations.