Fires involving energized electrical equipment are Class C fires. The principle remedy is to secure the ______ and apply ______ to the fire.

Fires involving energized electrical equipment are Class C fires. The principle remedy is to secure the ______ and apply ______ to the fire.

• A. CURRENT and WATER
• B. POWER and CO2
• C. FOAM
• D. ENERGY and ABC

Answer: (B)

Fires involving energized electrical equipment require removing the electrical source and using a non-conductive extinguishing agent. The best approach is to secure the power to the equipment, cutting off the current to stop further conduction and arcing. Once the power is off, apply a non-conductive agent suitable for electrical fires; carbon dioxide is a common choice because it blankets the fire and displaces oxygen without leaving a conductive residue. Water must be avoided on energized electrical fires since it conducts electricity and can spread the hazard. Foam and other agents aren’t as well suited for energized electrical fires, so the recommended path is to shut off power and use CO2.

Fires involving energized electrical equipment require removing the electrical source and using a non-conductive extinguishing agent. The best approach is to secure the power to the equipment, cutting off the current to stop further conduction and arcing. Once the power is off, apply a non-conductive agent suitable for electrical fires; carbon dioxide is a common choice because it blankets the fire and displaces oxygen without leaving a conductive residue. Water must be avoided on energized electrical fires since it conducts electricity and can spread the hazard. Foam and other agents aren’t as well suited for energized electrical fires, so the recommended path is to shut off power and use CO2.