
How do I reduce friction when pulling cable through a conduit?
2025-08-16Reducing friction is the single most important factor for a successful cable pull, especially in long runs or conduits with multiple bends. The most effective ways to reduce friction are:
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Use a Professional Lubricant: A high-quality, water-based, polymer pulling lubricant is essential. It should be applied generously to the cable as it enters the conduit. The lubricant creates a slippery film that drastically reduces the coefficient of friction, lowering the required pulling force and protecting the cable's jacket.
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Use Correct Conduit Fill Ratios: As mentioned, maintaining the correct fill ratio prevents the cables from wedging or jamming inside the conduit.
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Inspect the Conduit: Before pulling, a thorough inspection of the conduit is necessary. Ensure it is clean of dirt, debris, or sharp edges that could damage the cable or increase friction.
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Use Conduit Rollers and Sheaves: For large-diameter cables or in complex runs, using rollers or sheaves at bends and entry points helps guide the cable smoothly and minimizes friction.