Ohio Volunteer Firefighter Practice Exam

The suitable type of foam for use on electrical fires is Class C Foam. This foam is specifically designed to combat fires that involve energized electrical equipment. One of the key considerations in fighting electrical fires is the need to use agents that do not conduct electricity, and Class C Foam meets this requirement.

This foam effectively forms a protective layer over flammable materials and helps suppress flames without risking further electrical hazards. Additionally, firefighters must ensure that they are using foam that does not create conductive paths, keeping safety as the top priority when dealing with live electrical systems.

Class A Foam is typically used for ordinary combustibles, such as wood and paper, while Class B Foam targets flammable liquids. Class K Foam is specifically formulated for cooking oils and fats. Each of these foams has a unique property tailored for different types of fires, which is why Class C Foam is the correct choice for safely addressing electrical fires.