
What are the essential steps for preparing a conduit before pulling a cable?
2025-08-16Proper preparation is the most critical factor in a successful cable pull. Skipping these steps can lead to costly delays and damage to the cable. The key steps include:
-
Inspection and Cleaning: Visually inspect the conduit for any debris, sharp edges, or blockages. Use a conduit swab or mandrel to clean the inside of the conduit. For underground conduits, a duct prover is essential to ensure the conduit is clear and properly aligned.
-
Lubrication: Use a professional-grade wire-pulling lubricant to reduce friction. Apply it liberally to the cable as it enters the conduit, especially for long pulls or runs with multiple bends. This is a low-cost step that dramatically reduces the pulling tension.
-
Establishing a Pull String: Before the cable pull, you must first get a pull string or mule tape through the conduit. A conduit mouse and a shop vacuum are an effective combination for this task. Once the string is through, you can use it to pull the heavier mule tape or pulling rope.