What does Article 440 of the NEC® cover?

Article 440 of the National Electrical Code (NEC®) specifically covers the installation of air conditioning and refrigerating equipment. This article includes comprehensive guidelines and requirements that ensure the proper installation, operation, and safety of these systems. It addresses various aspects, such as wiring methods, overcurrent protection, disconnecting means, and the appropriate sizing of conductors and equipment based on the load characteristics of air conditioning and refrigeration units.

This focus on air conditioning and refrigeration highlights the importance of specialized criteria in electrical work, which are critical for ensuring efficiency and preventing hazards associated with these systems. Understanding these guidelines is essential for electricians as they ensure compliance with the NEC and promote the safe and reliable operation of HVAC equipment.