In Article 410, how is a "lamp" defined?

The definition of a "lamp" in Article 410 of the National Electrical Code (NEC) encompasses a broad range of lighting devices that produce light through various technologies. This includes traditional incandescent bulbs, fluorescent tubes, halogen lamps, and modern LED technology. By stating it this way, the NEC recognizes the diversity of lighting options available, allowing for adaptability and inclusion of advancements in lighting technology.

This comprehensive approach ensures that the definition accommodates both existing and emerging lighting technologies, reflecting the industry's evolution. Focusing on just one specific technology, such as halogen or LED, would limit the applicability and relevance of the definition, thus making it less useful for code compliance and practical applications in diverse installations.