Which is a class "C" fire?

Which is a class "C" fire?

• A. Electrical
• B. Wood
• C. Paper
• D. Gasoline

Answer: (A)

Class C fires involve energized electrical equipment. This matters because the danger and response come from the electrical energy, not from wood, paper, or gasoline. Use non-conductive extinguishing media like dry chemical powders or CO2, and if safe, shut off the power before attacking the fire. Water is avoided on live electrical fires because it can conduct electricity and pose a shock hazard. Wood and paper are ordinary combustibles (Class A), and gasoline is a flammable liquid (Class B). Hence, the fire matching an electrical source is Class C.

Class C fires involve energized electrical equipment. This matters because the danger and response come from the electrical energy, not from wood, paper, or gasoline. Use non-conductive extinguishing media like dry chemical powders or CO2, and if safe, shut off the power before attacking the fire. Water is avoided on live electrical fires because it can conduct electricity and pose a shock hazard. Wood and paper are ordinary combustibles (Class A), and gasoline is a flammable liquid (Class B). Hence, the fire matching an electrical source is Class C.