What is a primary purpose of a fire hydrant in a fire protection system?

The primary purpose of a fire hydrant in a fire protection system is to supply firefighting water. Fire hydrants are essential components of municipal water supply systems designed specifically to provide firefighters with quick access to water during emergencies. This access allows firefighters to connect hoses and rapidly draw water to extinguish fires, making hydrants critical for effective fire suppression efforts.

By being strategically placed throughout communities, fire hydrants ensure that firefighters can access an ample water supply, especially in urban or densely populated areas where fires can spread quickly. Their design includes a valve and hose connections, making them user-friendly for trained fire personnel who need to act swiftly when responding to a fire.

In contrast, the other options listed do not align with the primary functionality of fire hydrants. They do not serve electrical purposes, provide illumination, or sound alarms, as their sole role is focused specifically on ensuring a readily available water source for firefighting operations.