What is one common characteristic of Class B fires?

Class B fires are distinctly characterized by the involvement of flammable liquids and gases. This category includes fires that originate from substances such as gasoline, oil, grease, and various solvents. These types of fires can be particularly dangerous due to the volatility of the materials involved, which can lead to rapid spreading and explosive reactions if not properly managed.

In contrast, other classifications of fires—like Class A—are associated with ordinary combustibles such as wood and paper, while Class C fires involve electrical equipment. Class K fires, on the other hand, are specifically related to cooking oils and fats. Therefore, recognizing the nature of Class B fires is essential for effective fire prevention and extinguishing practices, as the methods and agents used to combat them differ significantly from those used for other fire classes.