What does Article 430 of the NEC cover?

Article 430 of the National Electrical Code (NEC) specifically addresses motors, motor circuits, and controllers. This article outlines the requirements for the installation and operation of various types of motors, ensuring that they are safe and function correctly within electrical systems.

The article covers essential topics such as the selection, rating, and protection of motors, as well as the proper sizing of conductors and overcurrent protection. It provides guidelines for working with single-phase and three-phase motors and details how to calculate the full load current to ensure that the electrical systems supplying power to these motors are appropriately sized and protected against overload.

Understanding the specifics of Article 430 is vital for anyone involved in electrical contracting as it helps ensure compliance with safety standards while optimizing motor performance. The other topics mentioned in the options, such as transformers, emergency systems, and solar photovoltaic systems, are covered under different articles of the NEC and are not encompassed by Article 430.