Article 440 is concerned with which type of equipment?

Article 440 of the National Electrical Code specifically addresses Air-Conditioning and Refrigerating Equipment. This article provides guidelines for the installation, spacing, and requirements for disconnecting means and conductors associated with these systems. It emphasizes safety and efficiency in the installation and use of air-conditioning and refrigeration equipment, which are critical for maintaining proper atmospheric conditions in various environments.

The article outlines the necessary safety measures, equipment ratings, and wire sizing considerations to ensure that these systems operate effectively and safely while minimizing risks associated with electrical faults or failures. This focus on air-conditioning and refrigeration sets it apart from other categories of electrical equipment, emphasizing the unique aspects and requirements pertinent to these systems.

Understanding Article 440 is crucial for electricians and professionals working with HVAC systems, as it ensures compliance with safety standards and enhances the reliability of these essential systems in homes, commercial buildings, and industrial applications.