Which class of extinguisher is associated with electrical fires?

Which class of extinguisher is associated with electrical fires?

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

Answer: (B)

Electrical fires require an extinguisher that won’t conduct electricity. The tool designed for this situation uses non-conductive extinguishing agents—typically dry chemical or clean agent types—that can suppress flames on energized electrical equipment without creating a path for current to travel. Water-based extinguishers are dangerous here because water conducts electricity and can energize the extinguisher and surrounding surfaces, putting you at risk. If it’s safe to do so, shut off the power first; then use the non-conductive extinguisher to smother the flames at the base. Other extinguisher types are meant for ordinary combustibles, flammable liquids, or metals, so they aren’t appropriate for fires involving live electrical equipment.

Electrical fires require an extinguisher that won’t conduct electricity. The tool designed for this situation uses non-conductive extinguishing agents—typically dry chemical or clean agent types—that can suppress flames on energized electrical equipment without creating a path for current to travel. Water-based extinguishers are dangerous here because water conducts electricity and can energize the extinguisher and surrounding surfaces, putting you at risk. If it’s safe to do so, shut off the power first; then use the non-conductive extinguisher to smother the flames at the base. Other extinguisher types are meant for ordinary combustibles, flammable liquids, or metals, so they aren’t appropriate for fires involving live electrical equipment.