OSH Security Practice Test

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Class “C” Fires Involve

Flammable liquids
Poisonous and infectious material
Ordinary combustibles
Electronic equipment

The correct answer is: Electronic equipment

Fires classified as "Class C" specifically involve energized electrical equipment. When an electrical device or appliance catches fire, it falls into this category, which requires special handling and extinguishing techniques to avoid the risk of electrical shock or further damage. Using an appropriate fire extinguisher designated for Class C fires, such as a carbon dioxide (CO2) extinguisher or a dry chemical extinguisher, is essential to ensure both safety and effectiveness in extinguishing the flame without conducting electricity. The other classifications pertain to different types of fire hazards: flammable liquids are labeled as Class B fires, while ordinary combustibles like wood and paper would be classified as Class A. Poisonous and infectious materials, although hazardous, are not categorized under typical fire classifications relevant to fire extinguishing strategies.