What is the primary focus of fire extinguishers classified under Class B?

Fire extinguishers classified under Class B are specifically designed for combating fires that involve flammable liquids. This classification encompasses a wide range of substances, including gasoline, oil, grease, solvents, and other liquids that can ignite and contribute to dangerous fires. Understanding this classification is crucial for ensuring the right type of extinguisher is used during an emergency.

When a fire involves flammable liquids, using the appropriate Class B extinguisher prevents the fire from spreading and helps to effectively extinguish the flames without escalating the situation. Class B extinguishers often utilize agents such as foam, carbon dioxide, or dry chemical powders that can smother the flames and remove heat from the chemical reaction.

The other options refer to different types of fire classifications. Electrical fires typically fall under Class C, cooking oils would correspond to Class K, particularly in commercial kitchens, and combustible metals pertain to Class D. Each of these has specific extinguishing requirements and appropriate extinguishing agents, emphasizing the importance of selecting the right type for the specific fire hazard present.