26 Feb 06 17:35
You ask for recommendations and mine are:
1.) add a couple of splice boxes and pull in segiments. If you are really pulling it in one pull the supply reels will have to be huge.
2.) Try a sample calc with a .1 FF and a straigh pull, no bends, no ups no downs. 12.6x3x.2x3000= 22,000 Lbs. It gets worse with a few bends. I am assuming a weight of 12.6 lbs per phase.
Cable that size is usually configured with a "skid wire" o a lessen friction and damage.
I recommend starting with an accurate isometric diagram of the conduit. Calculate the pull tension manually using Xcel. USe the EPRI guidline if you can find it in a book. The major cable manufactures all have examples of tension calculations.
The skid wire arround a cable or group lessens tension and keeps the lubricate in the pipe more efficiently. Cable resting on the bottom of a pipe squeezes and rubs the lubricant from between the cable and the pipe wall.
After you have the isometric diagram of the run call the cable vendor and get their input. They will help, they don't want you to fail with their cable.
Include on your diagram all the set up and pull points, include locations where you can install intermediat pull point ( splice boxes).
I think if you research this you'll find that cable this size in pulled in pipe, not conduit but pipe with a smooth interior. Steel pipe back pulled into a directionally drilled hole is pretty common.
Beware of sidewall pressure and minimum bending radii. Get the data from the cable vendor.
I don't have much faith in the fiberglass raceway. Yose a non streach rope, lots of soap and hopefully the rope and or the skid wires won't cut a hole in it.
LEt us know what goes on.