Which color is traditionally used for the Class B extinguisher symbol?

Which color is traditionally used for the Class B extinguisher symbol?

• A. Green
• B. Blue
• C. Red
• D. Yellow

Answer: (C)

Color coding on extinguisher symbols helps you identify the right type of extinguisher at a glance. For Class B fires, which involve flammable liquids, the symbol is traditionally shown in red. The red color is designed to stand out and signal danger, making it quick to recognize under stress and aiding rapid, correct action. In many training schemes, other classes use different colors—green for some Class A scenarios, blue for electrical (Class C), and yellow for metals (Class D)—but red for Class B is the longstanding convention.

Color coding on extinguisher symbols helps you identify the right type of extinguisher at a glance. For Class B fires, which involve flammable liquids, the symbol is traditionally shown in red. The red color is designed to stand out and signal danger, making it quick to recognize under stress and aiding rapid, correct action. In many training schemes, other classes use different colors—green for some Class A scenarios, blue for electrical (Class C), and yellow for metals (Class D)—but red for Class B is the longstanding convention.