Each luminaire in a Class 1 Division 1 location must be marked to indicate the maximum what?

In a Class 1 Division 1 location, the marking on each luminaire indicating the maximum wattage of lamps is crucial for ensuring safety and compliance with electrical codes. This is because Class 1 Division 1 areas contain flammable gases, vapors, or liquids under normal operating conditions, which can create potentially explosive atmospheres.

By specifying the maximum wattage, the luminaire helps to prevent overheating and potential ignition sources, which is vital in these hazardous locations. The wattage rating ensures that the luminaire operates within safe limits, maintaining temperature control and reducing the risk of ignition from the light source itself.

Understanding this requirement emphasizes the importance of proper specifications in hazardous environments to maintain safety standards and protect both equipment and personnel. Marking luminaries with the correct wattage is part of ensuring that the overall system remains within safe operational parameters, significantly minimizing the risks associated with flammable substances present in the area.