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SESK: Stuff Everyone Should Know · sesk.info/home-a-ext-classc

A Class C fire extinguisher is designed for fires involving what?

Electrical equipment.

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  1. Electrical equipment ✔
  2. Wood, cloth and paper
  3. Cooking oils and fats

Why: Class C extinguishers use an agent that does not conduct electricity, so they are for plugged-in appliances and tools. Multipurpose B-C or A-B-C extinguishers cover several types.

Huh, didn't know that: Always look for the UL Listed or ULC Listed label, and pick the largest extinguisher you can safely handle.

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References

Answer: Electrical equipment. Class C extinguishers use an agent that does not conduct electricity, so they are for plugged-in appliances and tools. Multipurpose B-C or A-B-C extinguishers cover several types.

  1. US Fire Administration: Choosing and Using Fire Extinguishers www.usfa.fema.gov/prevention/home-fires/prepare-for-fire/fire-extinguishers
    Class C fire extinguishers use an agent that doesn't conduct electricity.
    Checked 2026-10-10.

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