A Class C fire involves:

• A. Electrical equipment
• B. Flammable liquids
• C. Wood and paper
• D. Metals

Answer: (A)

Class C fires involve energized electrical equipment. This means the fire is in devices, wiring, motors, or electrical panels where electricity is present. Because power is involved, the priority is to de-energize the circuit if it’s safe to do so, and to use extinguishing methods that don’t conduct electricity, such as a dry chemical or CO2 extinguisher. Water can cause electrical shock or short circuits, so it’s avoided on live electrical fires. For reference, other classes cover different fuels: ordinary combustibles like wood and paper are Class A, flammable liquids are Class B, and reactive metals are Class D. Therefore, the correct understanding is that a Class C fire involves electrical equipment.