What is the formula used for figuring the amount of pulling force when pulling cables into underground conduit?
I have multiple runs of 2" and 3", all PVC except the upright portions (at one end only) which is steel (90 degree elbows and risers out of the ground). All other elbows in the pull are PVC. The conduit runs all start at an underground vault, then continue out to, at the most, 2 PVC 90's, then to a steel 90, then up to cabinet. The max length will be 300'.
I want to purchase a small tugger, and rope, for pulling these cable (type TC). Most conduits will have only 2 or 3 multi-conductor cables, but one has 8 cables(seven 4-conductor cables and one 12-conductor cable).
Any recommendations on a brand of puller/tugger to purchase?
Rick Miell
