Direct Burial Fiber Optic Cable Installation

One outdoor method of installation is direct burial.

Direct burial fiber optic cable installation.

Direct burial installations are most common for long cross country installations. Fiber optic cables can also be pulled through underground ducts which protect the cables from harsh. 1 04 it is assumed in this document that the reader is familiar with the direct burial procedure used for copper cable. These cables may be strictly outdoor types or may be indoor outdoor types which may provide greater versatility in campus type applications.

The cables are plowed in or buried in a trench. 12 fibers are arranged in a ribbon enabling fast mass fusion splicing. 2 0 precautions 2 01 the following are some suggested. The most common cables used for direct burial are steel armored outdoor fiber cables.

Corning cable systems recommends that fiber optic cable be buried a minimum depth cover of 30 inches 77 cm. A direct burial installation typically involves. Ensure that the proper cable length has been installed before cutting off excess cable. For direct burial installations the cable should lie flat in a trench free of any large stones or boulders that may deform the cable.

The outdoor cable is quite rugged in order to withstand a harsh environment. Table 1 provides suggested cover depths. Do not allow vehicles to drive over a cable. Fiber counts from 12 to 864 fibers.

At the transition point between the direct buried section and the conduit the cable must be. 1 fiber optic cables are typically buried at depths from 36 to 54 inches. In such cases use the figure eight configuration to prevent kinking or twisting. This will preclude cable damage during installation and provide additional support and rodent protection.

Direct burial installation fiber optic cables are available for outdoor use. For any direct burial the use of an armor tape cable design or a plowed conduit system is recommended. The following methods of direct burial of fiber optic cables will be addressed. Direct buried installations are often combined with duct installations to go under obstacles like roads driveways etc.

The installation process can be very quick. Avoid placing cable reels on their sides or subjecting them to shock from dropping. Many fiber optic installations require direct buried applications. Direct buried fiber optic cable installation practices are essentially the same as those used for placing copper cable.