What is the main principle of lighting safety in hazardous areas?

The main principle of lighting safety in hazardous areas is to limit electrical energy in hazardous conditions. This practice is crucial because hazardous environments can include flammable gases, vapors, dust, or other materials that can ignite or explode when exposed to electrical energy. By controlling and minimizing the amount of electrical energy present, the risk of ignition is significantly reduced.

This approach aligns with safety standards that recommend using lighting techniques and equipment designed to prevent the potential for sparks or overheating, which could lead to catastrophic events. Understanding this principle allows responders and technicians working in structural collapse scenarios to create a safer operational environment, thereby protecting both personnel and potential victims trapped in hazardous conditions.

The other options focus on various aspects of lighting safety but do not directly address the fundamental concern of electrical energy's role in hazardous settings. For instance, minimizing the use of lighting sources might reduce risk but doesn't specifically manage the dangers posed by electrical energy. Similarly, while using non-conductive lighting fixtures is beneficial, it is a reactive rather than a proactive measure in terms of electrical safety. Ensuring a continuous power supply is generally important for operational effectiveness but does not inherently relate to the primary safety concern of limiting electrical energy in a hazardous atmosphere.