Electrical fires are which class?

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

Answer: (D)

Electrical fires involve energized electrical equipment, so they are classified as Class C fires. The Class C designation signals that electricity is involved, and only nonconductive, electrically safe extinguishing media (like CO2 or dry chemical) should be used while the power is safely off. If the power can be shut down, the fire may then be addressed as the appropriate class based on the actual fuel (Class A or Class B). Other classes cover different fuels: Class A is ordinary combustibles (wood, paper), Class B is flammable liquids, and Class D is combustible metals.