I was working on a ranch this last week for my job. We had to pull about 300 feet of network cable through some 1 inch conduit we put in to the ground.
When I went into town, the electrician I bought the pull string from had a great tip for getting the pull string through a long run.
- Tie a small piece of a plastic bag, a piece of plastic grocery bag worked best, on the end of the pull string.
- Hook up a shop vacuum on the other side of the conduit run. We ended up using some irrigation pipe to downsize the hose to the 1 inch conduit.
- Turn on the vacuum and the plastic on the other end is pulled through.
We ended up getting a pull string through 300 feet of conduit this way!