Which type of hazard does a halogenated extinguisher address?

Halogenated extinguishers are specifically designed to combat both Class B and Class C hazards. Class B fires involve flammable liquids such as gasoline, oil, and grease, while Class C fires are electrical fires. Halogenated agents, which include chemicals like bromotrifluoromethane or perfluorocarbon, are effective because they work by interrupting the chemical reaction of the fire rather than cooling the fire down or displacing oxygen, which makes them safe to use on electrical equipment as well.

Using a halogenated extinguisher on flammable liquid fires effectively suppresses the flames without the risk of spreading the burning liquid, which can happen with some water-based extinguishers. Additionally, since these agents are not electrically conductive, they pose minimal risk when used on energized electrical equipment, making them suitable for Class C fires. This dual capability to tackle both types of hazards is why the answer encompasses both Class B and Class C.