What does Article 404 focus on in electrical installations?

Article 404 in the National Electrical Code (NEC) specifically focuses on switches used in electrical installations. This article covers the requirements for the installation, operation, and maintenance of switches, ensuring they are safe and function properly within electrical systems. It details aspects such as switch types, switch ratings, and installation guidelines that help prevent electrical hazards and improve the reliability of switching mechanisms in both residential and commercial settings.

Understanding the importance of switches in electrical systems is crucial, as they serve as the primary control devices in managing the flow of electricity to various loads. By providing clear standards and regulations, Article 404 contributes to the overall safety and efficiency of electrical installations.