Class B fires involve which of the following?

Class B fires involve which of the following?

• A. Electrical equipment
• B. Flammable liquids
• C. Ordinary combustibles
• D. Combustible metals

Answer: (B)

Fires are categorized by what is burning, and Class B specifically covers flammable liquids. These fires involve liquids like gasoline, solvents, oils, and fuels, which release vapors that mix with air and ignite. The presence of those ignitable vapors is what sustains the flame, not the solid material itself. That’s why flammable liquids are grouped here. Electrical equipment fires aren’t Class B because they involve energized electrical sources, which fall under a different category. Ordinary combustibles like wood, paper, and textiles are Class A. Combustible metals such as magnesium or titanium are Class D.

Fires are categorized by what is burning, and Class B specifically covers flammable liquids. These fires involve liquids like gasoline, solvents, oils, and fuels, which release vapors that mix with air and ignite. The presence of those ignitable vapors is what sustains the flame, not the solid material itself. That’s why flammable liquids are grouped here.

Electrical equipment fires aren’t Class B because they involve energized electrical sources, which fall under a different category. Ordinary combustibles like wood, paper, and textiles are Class A. Combustible metals such as magnesium or titanium are Class D.