Pulling force

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Engineer
How do I calculate the approximate pulling force of a cable into a duct?

This is 6-strand fiber & is limited to 600#. I know the cable diameter, duct ID, length, etc. And can alter spec'ed duct dia. or even put in a pull box halfway if needed....
 

iwire

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Staff member
Location
Massachusetts
It's interesting what does not enter into the equation.

It makes sense when you remember that assumes you have not overfilled the conduit. The one that most people mention is that a long radius sweep does not lower the pulling force only the sidewall pressure.
 
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