Answer :
Final answer:
Air-pressurized Water Extinguishers (APW) work on Class A fires involving combustible materials such as paper, wood, cloth, and plastics.
Explanation:
Air-pressurized Water Extinguishers (APW) work on Class A fires which involve combustible materials such as paper, wood, cloth, and plastics. Class A fires are characterized by the formation of glowing embers and the production of smoke.
APW extinguishers discharge pressurized water onto the fire, cooling the material and extinguishing the flames by removing heat. The water also helps to prevent reignition. These extinguishers are not suitable for fires involving flammable liquids, electrical equipment, combustible metals, or cooking oils.
For Class B, C, D, and K fires involving flammable liquids, live electrical equipment, combustible metals, or cooking oils, different types of extinguishers such as dry chemical, carbon dioxide, or wet chemical extinguishers are required.
