Which of the following is NOT a listed use for 2½ inch hose?

• A. Supply lines
• B. Aerial water drops
• C. Denver packs
• D. Supply ladder pipe

Answer: (B)

The capability being tested is which tasks a 2½ inch hose is typically used for versus what it’s not suited for. A 2½ inch hose is a versatile, medium-diameter line that works well for supplying water to the attack line and to portable or compact devices on the fireground. It is commonly used as a supply line from a hydrant or pump, it can be part of a Denver pack setup, and it can feed a ladder pipe, delivering water through the ladder apparatus to an elevated or exterior area.

Aerial water drops, on the other hand, require very high water flow and range, which usually come from larger-diameter lines or dedicated master-stream equipment. A 2½ inch hose cannot reliably provide the necessary volume or reach for aerial drops, so that use is not listed for this hose.