How many fire extinguishers rated for class B and C fires are required on fire apparatus trucks?

The requirement for fire extinguishers rated for Class B and C fires on fire apparatus trucks is based on the need to effectively respond to fires involving flammable liquids (Class B) and electrical equipment (Class C). Having two extinguishers ensures that the firefighting team has adequate resources to manage incidents that may occur simultaneously or in different locations on the scene.

Class B and C extinguishers are crucial because they can be used for different types of hazards. For example, in a situation involving a vehicle fire that might also affect electrical systems, having two extinguishers allows firefighters to transition between the two fire types without delay. Fire apparatus trucks are commonly deployed in various environments, and the possibility of encountering both classes of fires means that adequate fire extinguishing capability is essential for safety and effectiveness.

The specific number, in this case, is determined by regulations or standards that govern fire service operations, which recognize that carrying only one extinguisher might not be sufficient to ensure safety and to cover all potential hazards that could arise during an emergency response. Thus, having two extinguishers creates a more robust safety protocol for firefighters.