A power fishing system is used primarily to blow or vacuum a ______ through a raceway system.

A power fishing system is used primarily to blow or vacuum a ______ through a raceway system.

• A. Cable
• B. Conduit
• C. Wire rope
• D. String line or rope

Answer: (D)

A power fishing system is used to create a path through a raceway by moving a lightweight line down the route, typically by blowing air or applying vacuum. The line—string line or rope—is designed to be easily pushed or pulled through bends and fittings, serving as the pull cord to haul the actual conductors later. Heavier items like cables or conduit wouldn’t pass through smoothly with an air- or vacuum-assisted method, and wire rope is too stiff and heavy for this purpose. So the best choice is a string line or rope, which establishes the path that cables will follow once it's in place.

A power fishing system is used to create a path through a raceway by moving a lightweight line down the route, typically by blowing air or applying vacuum. The line—string line or rope—is designed to be easily pushed or pulled through bends and fittings, serving as the pull cord to haul the actual conductors later. Heavier items like cables or conduit wouldn’t pass through smoothly with an air- or vacuum-assisted method, and wire rope is too stiff and heavy for this purpose. So the best choice is a string line or rope, which establishes the path that cables will follow once it's in place.