Water can be harmful when used on which type of fire?

Water can be harmful when used on which type of fire?

• A. Class B
• B. Class K
• C. Class C
• D. Class A

Answer: (C)

Water can be harmful when used on Class C fires, which involve electrical equipment. The reason for this is that water is a conductive material. When water is applied to an electrical fire, it can conduct electricity, posing a serious risk of electric shock to anyone attempting to extinguish the fire. Furthermore, using water on a Class C fire can exacerbate the situation by allowing the fire to spread, especially if the water causes a short circuit or if it comes into contact with live wires. For clarity, Class B fires, which involve flammable liquids, and Class K fires, associated with cooking oils and fats, should not be put out with water as well; however, the primary concern with water is its conductivity on Class C fires. Class A fires, which involve ordinary combustibles like wood and paper, can be effectively extinguished with water, as it helps to cool and suppress the fire without the risks seen with electrical fires.

Water can be harmful when used on Class C fires, which involve electrical equipment. The reason for this is that water is a conductive material. When water is applied to an electrical fire, it can conduct electricity, posing a serious risk of electric shock to anyone attempting to extinguish the fire. Furthermore, using water on a Class C fire can exacerbate the situation by allowing the fire to spread, especially if the water causes a short circuit or if it comes into contact with live wires.

For clarity, Class B fires, which involve flammable liquids, and Class K fires, associated with cooking oils and fats, should not be put out with water as well; however, the primary concern with water is its conductivity on Class C fires. Class A fires, which involve ordinary combustibles like wood and paper, can be effectively extinguished with water, as it helps to cool and suppress the fire without the risks seen with electrical fires.