22+ Pull Box Calculator. Calculate proper junction box and pull box sizes according to nec standards. Estimate and manage cable installation projects with this tool that calculates conduit size, pulling tensions, cable sidewall pressure, and more.

Estimate and manage cable installation projects with this tool that calculates conduit size, pulling tensions, cable sidewall pressure, and more. Enter the project, case number, type of pull, conduit size and row. Pull boxes, junction boxes, and conduit bodies must be sized to allow conductors 4 awg and larger to be installed without damage to the conductor insulation.








