Every type of extinguisher is designed to fight a certain class or classes of fire. All ratings are shown on the extinguisher faceplate. Some extinguishers are marked with multiple ratings such as AB, BC and ABC. These extinguishers are capable of putting out more than one class of fire. Select the most appropriate type of fire extinguisher for your needs based on the class of fire, which are listed below.
Class A fires involve ordinary combustibles or fibrous material, such as wood, paper, cloth, rubber and some plastics. Class B fires involve flammable or combustible liquids such as gasoline, kerosene, paint, paint thinners and propane. Class C fires involve energized electrical equipment, such as appliances, switches, panel boxes and power tools. Class D fires involve certain combustible metals, such as magnesium, titanium, potassium and sodium.
If you have further questions regarding your fire extinguisher needs, please refer to the yellow pages in the phone directory for a company that carries Underwriters Laboratory (UL) equipment.