For which class of fires should the Water Fire Extinguisher be used?

The Water Fire Extinguisher is specifically designed for use on Class A fires, which involve ordinary combustible materials such as wood, paper, cloth, and certain types of plastics. This type of extinguisher operates by cooling the burning material below its ignition temperature and by soaking the materials to prevent re-ignition.

Using water on Class A fires is effective because it removes heat, which is one of the three elements needed for combustion (heat, fuel, and oxygen). It's important to note that using water on Class B or Class C fires can be hazardous. Class B fires involve flammable liquids or gases, where water can spread the fire or cause explosions, while Class C fires involve live electrical equipment, making water a dangerous choice due to its conductivity. Therefore, the suitability of the Water Fire Extinguisher is limited to Class A fires, highlighting the importance of selecting the appropriate extinguisher for different fire types.