True or False: A wye appliance is used to divide a single hose line into multiple hose lines.

A wye appliance is indeed used to divide a single hose line into multiple hose lines. This tool allows firefighters to efficiently distribute water from one hose line into two separate lines, enabling them to provide coverage to multiple areas or to supply different nozzle operators simultaneously. By using a wye, firefighting crews can increase their tactical effectiveness, allowing for more flexible and expansive operations in managing a fire scene.

This functionality is crucial in firefighting, where multiple lines may be necessary to combat flames spread across a larger area or to protect different sectors of a building. The wye appliance helps facilitate this by allowing a single water source to serve multiple outputs, a significant enhancement in resource management during emergency operations.