The C rating on an extinguisher indicates suitability for which type of fire?

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Multiple Choice

The C rating on an extinguisher indicates suitability for which type of fire?

Ratings on extinguishers tell you what kinds of fires they’re safe to fight. The C rating is for electrical fires, meaning the extinguisher is suitable for fires involving energized electrical equipment as long as you can safely disconnect the power first. This works because the extinguishing agent (often non-conductive dry chemical or CO2) won’t conduct electricity and won’t create a shock hazard. Why this is the best fit: electrical fires require not only putting out the flames but also avoiding metal-to-metal or electrical conduction that could endanger the operator. The other fire classes refer to different fuels—ordinary combustibles, flammable liquids, and combustible metals—each needing different extinguisher types and ratings.

Ratings on extinguishers tell you what kinds of fires they’re safe to fight. The C rating is for electrical fires, meaning the extinguisher is suitable for fires involving energized electrical equipment as long as you can safely disconnect the power first. This works because the extinguishing agent (often non-conductive dry chemical or CO2) won’t conduct electricity and won’t create a shock hazard.

Why this is the best fit: electrical fires require not only putting out the flames but also avoiding metal-to-metal or electrical conduction that could endanger the operator. The other fire classes refer to different fuels—ordinary combustibles, flammable liquids, and combustible metals—each needing different extinguisher types and ratings.

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