Class II groups are dusts: group E contains conductive or metal dusts like magnesium; group F contains carbonaceous dusts, such as coal; group G dusts are non-conductive dusts including grain, wood …

UL classification for hazardous location motors is based on the atmosphere in which the motor will be operating under normal conditions. There are three major classifications, each with unique …

Type 8 Enclosures constructed for either indoor or outdoor use in hazardous (classified) locations classified as Class I, Division 1, Groups A, B, C, and D as defined in NFPA 70.

The Class/Division method is the dominant method used in North America with requirements set by NEC/CEC, although the Zone system has wider use throughout the world in the chemical and …

Class I, Division 1 – Location in which ignitable concentrations of flammable gases can exist under normal operation conditions. Ignitable concentrations of gases may exist frequently because of …

Division 1: Refers to the presence of the hazardous material during normal operating conditions and indicates that a hazardous condition is expected to exist all or most of the time. Division 2: Refers to …

This explains what is meant by the class, division, and group ratings given to products that are certified for use in hazardous locations. Each class and division is defined.