Nozzles with flows in excess of __________ gallons per minute are not recommended for handlines.

Nozzles with flows in excess of 350 gallons per minute are considered too high for effective handline operations. This is because the increased flow rate can create difficulties in managing the hose, resulting in challenges such as excessive weight and difficulty in maneuvering. Additionally, using higher flow rates can lead to decreased accuracy in nozzle streams and ineffective firefighting tactics, as firefighters may struggle to maintain precise control when directing the water where it's needed most. Handlines are designed for mobility and ease of use, and exceeding 350 gallons per minute typically compromises those key aspects, making it less effective in most fireground scenarios.