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It is not necessary to use all fires for the same type of fire extinguisher and the. Dry Chemical: Fire extinguishers such as the ABC Class fire extinguisher or the Standard BC Class fire extinguishers use a light, fine solid powder that extinguishes the fire. This classification therefore provides us with information on the type of fire extinguisher we should use to extract the flames.
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dry chemical extinguisher can put out a fairly large fire. Class fires abcd Knowledge base  »Health and security û The types of extinction of the types of fire can be placed in different classes depending on the burning material. Recharging is required after every use, no matter how brief. When required, have the unit recharged by a qualified professional–you can usually find these professionals listed under Fire Extinguishers in your Yellow Pages. The needle on the gauge indicates whether the unit is operable or in need of recharging. There are no numeric ratings for C class (electrical) fires, because the C rating simply means that the extinguishing agent in the unit is not electrically conductive.Ĭheck the dial gauge on your fire extinguisher monthly. For example, a 4-A rating means that the unit will put out twice as much Class A fire as a unit with a 2-A rating. As a rule, fire extinguishers rated A, B, and C are best for home use.Īll fire extinguishers also receive a numeric rating that indicates the size of the fire a particular unit is capable of fighting. Class C fires are electrical in nature.These are well suited for putting out ordinary household fires, making this type great for. Class A fire extinguishers are used for ordinary combustibles, such as wood, paper, cloth, and even plastic. On Class B fires the powder interferes with the. Each rating describes the type of fire the extinguisher can effectively fight. Class B fires involve flammable liquids, such as gasoline, paint thinner, grease, motor oil, and solvents. On Class A fires the particles fuse and swell to form a barrier which excludes oxygen and prevents re-ignition.Class A fires involve paper, wood, cloth, rubber, and some plastics.according to the types of fires they are designed to put out. Fire extinguishers are rated by Underwriter’s Laboratories, Inc.