Greenlee continues to drive efficiency with PullCalc, an app that helps electricians and contractors approximate the pull force needed to install an electrical cable inside of conduit.

Data is entered by "legs" and each leg is considered to be a straight run of conduit followed by a bend, except the last leg, which usually has no bend. The calculation for each leg requires the following information to be entered:
- Wire size
- Number of wires
- Conduit I.D.
- Duct Material
- Material of the Cable Insulation
- Coefficent of Friction*
- Length of Leg
- Bend angle
- Vertical Rise

*Due to unknown factors involved, it prohibits giving exact results, most notably the coefficient of friction. Lubrication, surface texture, and lay of the cable are never uniform along the length of a conduit run. Comparing the known forces of pulls against the estimated force should give you a guide as for a good coefficient of friction to use for similar future pulls, and a table with some suggested starting points for the coefficient of friction of well-lubricated cable is a drop down option in the app. If lubricant is not used, triple the values in the table.

What’s New

Version 1.2.4

minor bug fixes

Ratings and Reviews

BernadetteMarie ,

Has Major Potential

Great to see this app put out. Would love to be able to select copper or aluminum and have more wire insulation types. Also need to be able to put more than (4) for the quantities of conductors in the conduit.

Spillingbeans ,

Please allow summary to be printed or emailed

Great app for those who need to know approximate max pulling weight you will see at the puller end and to verify pulls to engineering. But the summary cannot be printed or emailed?

leJudge ,


Easy to use, will help with all projects related to pulling wires.


56.2 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2018 Greenlee Tools Inc.


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