When are recess fixtures considered dangerous according to the NEC?

Recess fixtures are considered dangerous when they are installed in contact with combustible materials due to the risk of fire. The National Electrical Code (NEC) emphasizes safety in electrical installations, particularly regarding heat generation. When a recess fixture produces heat, if it is placed too close to combustible materials—such as insulation, wood framing, or other flammable substances—there is a significant risk that the heat could ignite these materials, leading to a fire hazard.

This requirement is in place to ensure that fixtures are installed in a manner that allows for adequate ventilation and heat dissipation. Proper installation and adhering to specific standards minimize the risks associated with electrical components.

While improper installation and wattage limitations can pose safety concerns, the core issue with recess fixtures is their interaction with surrounding materials. Similarly, the context of the installation—whether residential or commercial—does not solely dictate safety; the critical factor remains the proximity to combustible materials.