Pulling tension - 12kV primary 1/0 Al

[GISdude]

Hi all,
I'm trying to figure out the pulling tension for a 381' run. When starting at a XFRM and and pulling to a 90deg elbow, is it acceptable to say that the initial tension at the XFRM is zero? Or should I put a small tension(say25lbs) at that point? This is going to be a 3phase run that will terminate at a primary pull box - all the elbows added together is over 270deg. Yes, the crew will hate me, but it's got to be done.

I've already used an online calculator (thanks SOUTHWIRE) and did a manual calc and they are reasonable close.

Thanks,

 

[don_resqcapt19]

The crew should be pushing the conductors into the raceway at the feed end, but that does not always happen, so I would use some tension at the feed end.

 

[Julius Right]

If the cable drum at the entrance is about 2 m away from the first duct, the weight of one meter of cable will be Tin-I think.