A professional who forces electric cable through rubber jacket (tubing) to insulate cable, using compressed air. Responsibilities include:

• Unrolls tubing from reel on truck.
• Ties leader (cord) to wooden plug of specified dimensions and inserts plug into one end of tubing.
• Clamps tubing onto compressed-air line and opens valve allowing air to force plug and leader through tubing.
• Fastens leader to cable end and clamps tubing onto compressed-air line.
• Scoops powdered talc into hopper connected to air line.
• Signals worker stationed at opposite end of tubing to pull cable.
• Turns valve, allowing air to expand tubing and force talc into tubing, as cable is pulled through tubing.