Duct Installation Of Fiber Optic Cable

Most micro duct fiber cable products have a tension limit of 300 lbs or lower versus 600 lbs for typical outside plant fiber cable.

Duct installation of fiber optic cable.

Proper size and installation of the innerduct is critical for ease of cable installation. As compared to the duct the installation process is relatively very quick. In underground fiberoptic cable installation cables can be buried directly in a trench or placed into a buried duct. The ducts and innerducts should be kept free of debris and maintained watertight at all times.

Testing fiber optic cable on the reel all optical fiber cables must be tested while on the reel prior to deployment. Compressed air is injected in the duct inlet after few hundred meters of cable is pushed into the duct. General precautions should always be applied when. Three 1 25 inch inside diameter i d innerducts can usually be pulled into a 4 inch duct.

Rodding is used to clear the duct passage and install the pulling rope using fiberglass pushrods. 1 micro ducts can also be placed directly into larger telecommunications conduits or can be factory assembled into a composite unit of multiple micro ducts. Duct cable can be hand pushed or pulled in via tape string into a micro duct. Preparations for duct installation using an air blowing method.

Generally there are two approaches for optical cable installation. The most common cables used for this type of installation are steel armored outdoor fiber cables. Micro duct cable is blown jetted into the micro duct. Loose tube cables can be blown jetted or pulled into a duct or conduit that will protect the cable during its installed lifetime.

Normally standard size fiber optic cables are pulled into innerduct sub ducts. Installation crews must use blowing equipment specifically designed and tested for micro duct fiber cable to avoid damage to the cable. After the fiber optic cable is installed into a duct or innerduct end plugs should be installed to provide an effective water seal. The most commonly deployed dielectric outdoor cable design with fiber counts from 2 to 288 fibers and up to 432 fibers for gel filled.

The pushing force is applied mainly near the cable inlet by a pushing device. Compressed air flows at high speed through the duct and along the cable. Duct installation of fiber optic cable installation methods of fiber optic cable into duct. Underground direct installation directly buried installations are most common for long cross country installations.

Innerduct is a way to subdivide the duct and to provide for future cable pulls. Installing cable is a time consuming and expensive process so it is important to ensure the cable is good before installation. Innerduct is available in ribbed corrugated and smooth.