Which type of fire requires Type B extinguishers?

The appropriate use of Type B fire extinguishers is specifically for fires that involve flammable liquids. These can include substances such as gasoline, oil, grease, and solvents, which are common in industrial, marine, and residential settings. Type B extinguishers are designed to tackle these types of fires effectively by using agents that can smother the flames and interrupt the chemical reaction that sustains the fire.

Fires from combustible solids, such as wood and paper, and those involving combustible gases, require different classes of extinguishers. Electrical fires are also distinct and necessitate extinguishers designed to be safe around electrical components. Each type of fire has specific characteristics that determine the most effective extinguishing method, which is why having the correct extinguisher for a specific type of fire is crucial for safety and effectiveness in emergency situations.