Classes of Fire

All commercially available fire extinguishers will be labeled Class A, B,  C, D or K. This indicates the type of fire on which the extinguisher  is used.

Class A: Fuel or material consisting of wood, paper, cloth and other combustible solids.

Class B: Fuel consists of flammable liquids such as gasoline, solvents, and so forth.

Class CAn energized electrical wiring or equipment fire. It includes fire in motors, compressors, pumps, electrical tools and switch gears.

Class D:  Involves burning combustible metals such as magnesium.

Class K:  Involves burning of cooking media such as vegetable or animal oils and fats.