What is a common technique to detect potential issues in conduit before installing cables?

A common technique to detect potential issues in conduit before installing cables is conducting a test pull. This method involves using a cable pulling device to simulate the installation of cables through the conduit. By actually pulling a rope or a light cable through the conduit, installers can check for any obstructions, sharp edges, or bends that could hinder the installation of the final cables.

Performing a test pull allows technicians to identify problems such as friction points, blockages, or insufficient space within the conduit. This proactive step helps ensure that the conduit system is suitable for the intended cables, ultimately reducing the likelihood of installation problems or cable damage during the actual installation process.

While visual inspection is important for assessing the overall condition of the conduit, it may not reveal hidden issues, and methods like using sonar or thermal cameras are typically employed for different applications and not specifically for routine conduit checks prior to cable installation.