When should cable pull calculations ideally be performed?

The ideal time to perform cable pull calculations is before raceway installation. Carrying out these calculations at this stage allows for proper planning and assessment of the physical and mechanical limitations involved in pulling cables through conduit systems. It ensures that all factors, including cable type, length, conduit fill, bends, and pull distances, are considered ahead of time, which can help avoid potential issues during the actual installation. By addressing these calculations early in the process, it contributes to a smoother installation and enhances the safety and efficiency of the project.

Conducting cable pull calculations later—such as after installation or during testing—would not provide the same level of foresight or opportunity to address any challenges that might arise in the installation phase. Likewise, completing these calculations after the design is finalized may limit the ability to make necessary changes to ensure compliance with best practices and code requirements.