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

• A. String line
• B. Conduit
• C. Fiber optic cable
• D. Wire rope

Answer: (A)

Power fishing is about getting a lightweight pull line through a raceway so that the actual cables can be drawn in later. The system uses air pressure or suction to move this line through bends and long runs, because the line is thin and flexible enough to travel where heavier cables would be impractical. Once the string line is in place, it serves as a guide or carrier to pull the real cables through the raceway. The conduit is the channel, not what’s being moved; fiber optic cable and wire rope are the final items you would pull after the line is in place, not what the power fishing system blows or vacuums through the raceway.