What type of extinguisher class is designated for multiple use?

The designation of Class A, B, and C fire extinguishers as multi-purpose is based on their capability to extinguish various types of fires effectively. Class A extinguishers are designed to combat fires involving ordinary combustibles such as wood, paper, and textiles. Class B extinguishers are tailored for flammable liquids, while Class C extinguishers are intended for fires involving energized electrical equipment.

When an extinguisher is rated for multiple classes, it allows for greater flexibility and effectiveness in a range of fire scenarios. For example, an extinguisher that is classified as A, B, and C can be used in numerous environments, making it a versatile tool for fire safety in homes, offices, and industrial settings.

The other classes, such as D and K, serve specialized purposes. Class D extinguishers are specifically for fires involving combustible metals, which require unique and tailored agents to extinguish. Class K extinguishers are designed for fires involving cooking oils and greases, primarily in commercial kitchens. Finally, stating that only Class A extinguishers are multi-purpose limits their versatility and does not recognize the broad capabilities of the other classes in combination. Thus, the classification of A, B, and C extinguishers