What are the two divisions for each class in hazardous locations?

In hazardous locations, the classification system is designed to ensure safety in environments where flammable gases, vapors, dust, or fibers may be present. This classification is divided into classes and divisions. Each class identifies the type of hazardous material, while the divisions specify the likelihood and duration of the hazardous condition.

The correct answer, which identifies Division 1 and Division 2, means that in Division 1, the hazardous material is present under normal operating conditions, such as during normal or specific operations where ignition could occur. In Division 2, on the other hand, the hazardous material is not normally present in the air in dangerous concentrations but may accidentally exist under abnormal conditions. Each division serves to assist in selecting the appropriate equipment and safety measures needed for working in these environments.

The other options provided do not align with the established classification system for hazardous locations. Division 3 does not exist in this system; it only includes the two divisions mentioned. Zones A and B refer to another classification system used in Europe, which employs a “zone” system instead of "divisions" and is not applicable to the classification under the National Electric Code (NEC) in the United States. Type I and Type II are not terms used to categorize hazardous locations,