What type of motors does Article 430 of the NEC cover?

Article 430 of the National Electrical Code (NEC) focuses on the requirements for the installation and use of various types of motors. It specifically covers the protection, overload, and control of most general-purpose motors, including single-phase and three-phase motors used in various applications. This encompasses a wide range of motor types commonly found in industrial and commercial settings.

General-purpose motors are designed to drive a variety of loads and are used in many different environments. Article 430 provides guidelines on how to properly size and protect these motors, ensuring safe and effective operation. This includes stipulations on overcurrent protection, motor branch circuits, and disconnecting means.

While high-efficiency motors and specialty motors may have specific considerations, they are not the sole focus of Article 430. Specialty motors used in hazardous locations are typically addressed under different parts of the NEC, targeting unique conditions that require specific safety measures. Induction motors, which are indeed common, are included under the broader category of general-purpose motors, but Article 430 isn't limited to them alone; it applies to a variety of motor types. Therefore, recognizing that most general-purpose motors are the primary subject of Article 430 is key to understanding its scope and requirements.