How is an underfloor raceway defined in the NEC?

An underfloor raceway is defined as a raceway intended for installation beneath or flush with a floor. This definition is significant because it emphasizes the specific application of this type of raceway, which is designed to accommodate electrical wiring and other systems in a manner that is both practical and compliant with safety standards.

This kind of installation is beneficial for managing wiring in buildings, especially those with raised access floors, allowing for easy maintenance and flexibility when changes are required. The design of underfloor raceways helps in reducing visible clutter, improving aesthetics while ensuring that electrical systems are safely housed and accessible.

Understanding the definition aids in recognizing how different raceways serve distinct purposes in electrical installation, ensuring compliance with the NEC (National Electrical Code) and promoting safety and efficiency in building wiring systems.