Which types of luminaires are permitted in hazardous locations?

Luminaires permitted in hazardous locations must be specifically listed and labeled for use in those environments to ensure safety and compliance with the National Electrical Code (NEC). These fixtures are designed and tested to operate safely under conditions where flammable gases, vapors, or combustible dust may be present. Proper listing and labeling indicate that the luminaires have met stringent standards set by recognized testing laboratories for durability and safety in hazardous conditions.

Choosing luminaires not designed for hazardous locations could lead to serious risks, including explosions or fires, due to their inability to contain potential arcs or overheating that might occur. Thus, it is critically important that only those luminaires that are acknowledged by recognized testing agencies for application in specific hazardous environments are utilized. This adherence to safety standards aligns with NEC requirements, ensuring electrical installations are both safe and reliable in these high-risk areas.