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A" class - Fires that result from ordinary combustibles, such as wood and paper.

"B" class - Fires that result from combustible liquids, such as kerosene, gasoline, oil, and grease.

"C" class - Fires of an electrical nature. These result from the combustion of circuit breakers, wires, outlets, and other electrical devices and equipment. Extinguishers designed to handle this type of fire cannot use chemicals that are conductive since conductive agents increase the risk of electric shock to the operator.

"D" class - Fires resulting from combustible metals, such as sodium, potassium, titanium, and magnesium. These fires occur mostly in chemical laboratories and are rare in most other environments.

"K" class - These types of fires consume vegetable oils, animal fats, and generally happen in kitchens.

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12y ago

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