Equipment in hazardous locations must identify not only the class but also what specific property of the material present?

In hazardous locations, identifying the combustible properties of materials present is crucial for ensuring safety and compliance with relevant regulations. This specification helps in assessing the risks associated with different types of materials that may be present in an environment, especially when there is the potential for fires or explosions. Combustible properties include factors such as flammability, flash point, and the presence of volatile organic compounds, all of which are key in determining the appropriate equipment and safety measures that need to be implemented.

Understanding the combustible properties allows for the correct categorization and proper use of equipment designed for these hazardous areas. Regulations such as the National Electrical Code (NEC) outline standards that ensure that equipment will not create an ignition source when located in these dangerous environments, which is why this information is critical in the designation process.

The other properties, such as viscosity, color, or density, do not directly inform the safety protocols relevant to explosive or flammable materials in the same way combustible properties do. Thus, focusing on combustible properties is essential for choosing the right equipment and mitigating risks in hazardous locations.