What is the minimum size hand line typically used to attack a vehicle fire?

The minimum size hand line typically used to attack a vehicle fire is generally recognized as 1 3/4 inches. This size strikes a balance between maneuverability and the ability to deliver a sufficient volume of water to effectively control and extinguish the fire. It allows firefighters to manage the attack with greater ease in confined spaces, such as the area around vehicles, while still providing adequate pressure and flow rates necessary to combat the fire's heat and intensity.

The 1 3/4-inch line is particularly advantageous because it is versatile enough for most vehicle fires, allowing firefighters to respond quickly without the burden of larger hoses that may be more cumbersome. Additionally, it offers a good range of nozzle selection, which can be vital for adapting to varying conditions encountered during vehicle fire incidents.

In contrast, other sizes, such as 2-inch or 2 1/2-inch lines, may be more suited for larger structural fires due to their increased water flow and volume, making them more effective for extensive firefighting operations but less practical for rapid deployment around vehicles. The 1 1/2-inch line, while smaller, might not deliver enough water to effectively suppress more intense fires. Therefore, 1 3/4 inches is deemed the optimal choice