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Course Outline

Extinguishers are classified by letters and numbers. The numbers indicate the size of fire the extinguisher will put out compared to other extinguishers. For example, a 10B:C extinguisher contains more chemicals and will put out a larger fire than a 5B:C extinguisher. The letters indicate the types of fires the extinguisher will put out.

  • Class A fires are of combustible solids like wood.
  • Class B fires are of flammable liquids like gasoline or oil.
  • Class C fires are electrical fires.
  • Unit 2 of 6
  • Topic 3 of 9
  • Page 4 of 7