HI! Guys , looking for the best way to pull 1 6 stran burial fiber along with 25pr.cat3 burial and possibbly 1 burial cat5e, the distance is about 300 ft. of conduit with one junction box about in the middle 150ft, don't have size of conduit yet, rope will be 1/4 inch,,1.- Can i set all cables to pull at once as long as i tie onto to the 25 pr. first and tie fiber and cat 5e behind, with helper feeding it and plenty cable grease?? 2.- Should i pull from centre junction box to main building and reel off cable at junction box and do new building?? Or should i set up at one end new building or old, and pull out to junction?? 3.- Is it possible to pull all at once the full 300 ft. with out damaging fiber ?? 4.- Do i need to pull 2 separate runs fiber first?? Sorry for long question. Thanks for any suggestions. Brett
You really should pull a piece of inner duct in along with the 25 pair. Then, pull the fiber and CAT5 cable separately into the inner duct. That's the correct way to do this, however it is all determined by the conduit size. If the conduit isn't large enough to accommodate a piece of 1" inner duct and the 25 pair (less than 2"), then I'd obtain some 3/4" black polyethylene tubing from Lowe's to act as inner duct. Something is better than nothing.
Any type of CAT5 cable doesn't allow for much in the way of pulling tension. If you don't break it, you will likely distort the cable's electrical characteristics. You'd probably render it to being a CAT2 if you pull it too hard. That will need a nice smooth path and be pulled along with the fiber. You probably shouldn't lube it too much; too much lube actually will hurt you in the future. You really shouldn't need lube in properly-installed inner duct.
300 feet is not bad to pull continuously as long as you are using fiber cable that is rated for this type of installation (OSP). If you are using indoor-rated or indoor-outdoor, 300 feet might be too much tension without having inner duct of some kind.
don't have size of conduit yet...
Better be 4 inch! Pull box should be straight through. What is it with you people and long outside runs of CAT5?? You have friggin' fiber, use it!
-Hal
For OSP fiber the pulling tension is at least 600lbs. Just make sure you're pulling using the strength member and not the jacket. I will echo the inner duct and Cat5 comments. Inner duct can be a real life saver down the road, and the Cat5e OSP is more trouble than it's worth. Also, why not run 12 strand while you're at it? May not be your decision, but I would recommend it.
These may be worth a look:
https://www.belden.com/pdfs/techinfo/techinstallation%20fiber.htm https://www.polywater.com/teleto12.pdf
HI! Thanks Ed , Hal, and Clint I appreciate your opinions , the cat5e is just a temporary for printer is on a different proctol and will eventually be put on the fiber ,it will act as a backup if there is a fiber issue etc.Question is there a trick to stopping the rope wrapping around the 25 pr. if i pull it in first??
Swivels and a pulling "sock" found at most electrical wholesale houses.
You should also use a swivel between the pull rope and fiber.
Good luck.
Thanks , Ken i think you just answered 1 of my questions about the rope wrapping around the cable , the swivels should stopp that.,And hopefully Luck won't have anything to do with it. :toast: Thanks
Why would you pull the 25pr in first? Pull everything at once. It's never a good idea to try and pull into a conduit that already has something in it if you can avoid it. Swivels won't keep the rope from wrapping around what's already in there and burning the jacket when you use it.
Absolutely install 4 inch conduit, use a 1/2 inch pull rope. Put a "chinese finger grip" on the 25 pr and tape your inner duct WELL to the 25 pr. Pull straight through the pull box to the other end. Make sure you have someone feeding and lubing.
-Hal
HAL ,can when you say tape the inner duct well to the 25pr. i gather this is with the fiber in it already?? Also is it necessary to really use the inner duct well?? Thanks
No, you pull your fiber in later. The inner-duct will either have it's own pull string to which you attach a pull rope then the fiber or you have to push or blow one through.
Think of inner-duct as a separate compartment within the conduit. It protects what you have in it and makes it so that you can easily install or replace what you have in it without problems from or damage to itself or to other runs in the conduit. It's cheap and easy and worth the effort.
-Hal
Pull the fiber in after you have the innerduct through the conduit. Just don't lose the pull string inside when you do it.
......and no matter what Hal thinks, use a swivel on all pulls to keep the "piggy tail" effect on the cables, especially the fiber, from happening.
Yes, pull the innerduct with the 25 pair, then pull the others at the same time....or put in separate innerduct for the fiber and the Cat 5.
Yes, use swivels ... pulling after the fact can cause sheath burn...yes, but what do you do once the duct is full? In the real world it is roded, roped, and pulled...with many different techniques, depending on the situation.
Yes, I've pulled cables into duct banks with line trucks, even stood a line truck on the outriggers and rear duals....and didn't damage any cable.
Anything else?
In a 4" conduit we would pull in three 1.25" innerducts (with pull rope), Now you have the option to make three distinct pulls whenever you want.
There was also a set of "socks" (I can never remember their name) that you could pull in instead of a hard-sided innerduct.
Sam
"There was also a set of "socks" (I can never remember their name) that you could pull in instead of a hard-sided innerduct."
I believe the product that Sam is referring to is a product from Maxcell.
https://www.maxcellinnerduct.com/