Electrical Classification

Explain the differences between class 1 and class 2 hazardous locations

Hazardous Locations Classifications Descriptions - North American terms

Class 1, Div. 1 - Where ignitable concentrations of flammable gases, vapors or liquids can exist all of the time or some of the time under normal operation conditions.

Class 1, Div. 2 - Where ignitable concentrations of flammable gases, vapors, or liquids are not likely to exist under normal operating conditions.

Class 2, Div. 1 - Where ignitable concentrations of combustible dusts can exist all of the time or some of the time under normal operation conditions.

Class 2, Div. 2 - Where ignitable concentrations of combustible dust are not likely to exist under normal operating conditions.

explain the difference between class 1 div 1 and class 1 div 2

see above

Identify the hazardous locations in your dept. find a current copy of your departments hazardous classification map

FPD sumps

HDL Process tank farm

LFE tank farm

Perfume storage

Hazardous classification map, see Process Safety Owner

Determine rating of a device by observing the device nameplate

Devices should have labeling designating UL hazard classification