Large handlines flow approximately _____.

Large handlines are typically designed to handle higher volumes of water compared to smaller handlines, making them effective for tackling more significant fire incidents, especially in structural firefighting scenarios. A flow rate of approximately 250 gallons per minute (GPM) for large handlines is consistent with firefighting standards and practices, reflecting the capability to deliver a substantial amount of water to suppress fires quickly and effectively.

The choice of 250 GPM is optimal for providing enough water to create effective streams that can adequately penetrate fire conditions, protect adjacent structures, and support the suppression of larger fires. This flow rate enables firefighters to manage heat, push back flames, and cool hot spots, which is critical in preventing the fire from spreading or rekindling.

In contrast, other flow rates, such as 100 GPM or 150 GPM, are typically associated with smaller handlines intended for lighter firefighting scenarios. A flow rate of 350 GPM, while still within possible parameters for certain operations, tends to be more associated with aerial devices or large diameter hoses rather than standard large handlines. Thus, 250 GPM is well recognized as the standard flow for large handlines in firefighter training and operations.