What guideline is provided for LED luminaires in Article 410?

Option B is correct because it emphasizes that LED luminaires must be listed and suitable for their intended use and environment. This requirement ensures that the fixtures meet safety standards and performance criteria established by recognized testing laboratories. The listing indicates that the luminaire has been tested for specific conditions and can safely be used as intended, whether in residential, commercial, or industrial settings.

This guideline is crucial, as LED technology can vary widely in quality and application. By ensuring that the luminaires are properly listed, the risk of electrical hazards, overheating, or other potential failures is significantly reduced. The appropriateness for the intended environment addresses concerns about durability, resistance to environmental factors, and compatibility with other systems in place.

The other options, while relevant in certain contexts, do not directly reflect the primary safety and compliance standard outlined in Article 410. Dimming capabilities, color temperature controls, and installation height might enhance functionality or user experience, but ensuring compliance with established safety and performance standards through rigorous listing is the foundational guideline for LED luminaires.