OFS designs and manufactures fiber optic cables for best-in-class performance, ease of use and flexibility using our innovative cables that are the result of. HDD fiber optic cable an installation tools. Currency - All prices are in AUD Currency - All prices are in AUD. The FOA Reference For Fiber Optics. Outside Plant Fiber Optic Cable Jump To: Fiber Optic Cable Construction Fiber Optic Cable Types Cable Design Criteria Choosing Cables Cable Types: (L> R): Zipcord, Distribution, Loose Tube, Breakout. Cable provides protection for the optical fiber or fibers within it appropriate for the environment in which it is installed. Fiber. optic . Fiber optic cables come in lots of different types. It is important to choose cable carefully as the choice will. Cable's. job is to protect the fibers from the environment encountered in an. Outdoors, it depends on whether the cable is buried. Will it have to withstand high. Will the cable be exposed to chemicals or have to. What about being gnawed on by a. Indoors, cables don't have to be so. Outside. plant cable designs are optimized for the application type. In OSP. installations, cables may be underground, direct buried, aerial or. Underground Cables. Underground. cables are generally installed in conduit which is usually a 4 inch (1. Outdoor Cable Overview: The Importance of Outdoor Cable: Normal CAT5E and CAT6 cables will deteriorate quickly when exposed to outside conditions. NextGen ® Brand fiber optic cable is right for any outside plant application. Outside plant cables with loose tube constructions are built to withstand adverse. Here cables are. designed for high pulling tension and lubricants are used to reduce. Automated pulling equipment that limits. Very long runs or those with more. An alternative is to install duct lines and blow. Splices on underground cables are. Here the cable must. Splices on direct buried cables can be. Sufficient. excess cable is needed to allow splicing in a controlled environment. Aerial Cable. Aerial. Some cables are lashed to. CATV where light fiber cables are. Cables are available. Some cables are made to. Optical ground wire is used by utilities for high voltage. This cable is an electrical cable with fibers in. It is installed just. Splices on aerial cables can be. Most splices are. Hardware is available for. Submarine/Underwater Cables. Sometime. OSP installations involve running cables across rivers or lakes where. Special cables are available for this. Even underwater splice hardware is. Landings on the shore need to be planned to prevent damage. This usually allows saving costs but requires more. Fiber Optic Cable Construction. All. cables are comprised of layers of protection for the fibers. Most all. start with standard fiber with a primary buffer coating (2. Tight buffer coating. A soft protective coating applied directly to the 2. Loose Tubes (loose. Small, thin plastic tubes containing as many as a dozen. They allow the fibers to be isolated from high. Strength members. Strength members are usually aramid yarn, the same used in bulletproof. Dupont trade name Kevlar, which absorbs the. Aramid fibers are used not only because they are strong, but. If pulled hard, they will not stretch but. This ensures that. The proper method of pulling fiber optic cables is. Some. cables also include a central fiberglass rod used for additional. When included, these rods should be attached to swivel pulling. Few cables today use metallic strength members. Cable Jacket: The. Outdoor. cables will generally be black polyethylene (PE) which resists moisture. Indoor cables use flame- retardant jackets that. Some. outdoor cables may have double jackets with a tough layer of. Kevlar for. strength to allow pulling by the jackets. Indoor cables usually. PVC (polyvinyl chloride) jacket for general or. Indoor- outdoor cables usually have a PE outer jacket that can be. Protection Against Water and Moisture. Cables. installed outdoors require protecting the fibers from water. Either a. gel or as is becoming more common, absorbent tape or powder, is used to. Metallic armor requires that the cable be properly. Look at the pictures below to see how each type of cable incorporates these components. Fiber Optic Cable Types. Tight Buffer Cable Types. There. are two basic types of cables, generally defined as tight buffer and. Tight buffer cables (simplex, zipcord, distribution and. Generally, tight buffer cables. Simplex And Zipcord. These. types are used mostly for patch cord and backplane applications, but. Simplex cables are. Kevlar (aramid fiber) strength members and. The jacket is usually 3mm (1/8 in.) diameter. Zipcord is simply two of these joined with a thin web. They contain several tight- buffered fibers. Kevlar strength members and. These cables are small in size, and used for short, dry. The fibers are double. This is a strong, rugged design, but is larger and more. It is suitable for conduit. It's perfect for industrial. Because each fiber is. Breakout cable. can be more economic where fiber count isn't too large and distances. Loose Tube Cable. Loose. tube cables are the most widely used cables for outside plant. These cables are composed of. This type of cable is ideal for outside plant. It can be used in conduits, strung overhead or buried directly. Some outdoor cables may have. Since the fibers have only a thin buffer coating, they. Loose tube. cables with singlemode fibers are generally terminated by spicing. This cable has the most fibers in the smallest cable, since. Not only is this the. Typically 1. 44 fibers in ribbons only has a cross section of about. Since it's outside plant. Another. advantage of ribbon cable is Mass Fusion Splicers can join a ribbon (1. Ribbon pigtails are. Premises cabling also. MTP connector. These cables are common. LAN backbones and data centers. Armored Cable. Armored. Armored cable. withstands crush loads well, for example in rocky soil, often necessary. Cable installed by direct burial in. Another application for. Indoor. armored cables may have nonmetallic armor. Metallic armored cable is. As with other fiber. Single or double armor. Regular outdoor loose tube cables can be helically lashed to. CATV.) Some cables have heavier. ADSS cable if the. Self- supporting cables use. Aerial. hardware to store slack cable can be mounted on the cable itself or on. The. cable known as a figure 8 cable has a cable bonded to an. The. messenger is supported at each pole. If the messenger is steel, it must. You can also get figure 8 conduit which can be. All. dielectric, self- supporting cable (ADSS) uses special hardware on the. A. widely used aerial cable is optical power ground wire (OPGW) which is a. The fiber is. not affected by the electrical fields and the utility installing it. This cable is usually installed on the. Underwater And Submarine Cables. It. is often necessary to install fibers under water, such as crossing a. For simple applications a rugged direct burial cable may be. For true undersea applications, cables are extremely rugged. Submarine cables are completed on. Even More Types Are Available. There's double- jacketed indoor/outdoor, dry water- blocked, etc. Every. manufacturer has it's own specialties and sometimes their own names for. And check out the smaller cable companies. Air- Blown Fiber. Another . By installing a. If you need to upgrade, blow out the. Both indoor and outdoor versions of. FTTH. Special fibers are required that. It's more expensive to. Hybrid and Composite Cables. These two types of cables are often confused, but almost everybody and the NEC defines them as: Hybrid cables. Cables that contain two types of fibers, usually multimode and. These cables are often used in campus and premises. Composite cables. Cables that contain both fibers and electrical conductors. Underwater. tethered vehicles use cables like this, as do some cables used for. CCTV cameras. These cables must be. Note: Sometimes the meaning of these two cables is reversed - that has even happened in standards - so check to ensure which type cables are. Cable Design Criteria. Choosing. a cable requires consideration of all the environmental factors. Here are. some of the most important factors. Pulling Strength. Some cable is simply laid into cable trays or ditches, so pull strength is not too important. But other cable may be pulled thorough 2- 5 km or more of conduit. Even with lots of cable lubricant, pulling tension can be high. Most cables get their strength from an aramid fiber (Kevlar is the du. Pont trade name), a unique polymer thread that is very strong but does not stretch - so pulling on it will not stress the other components in the cable. The simplest simplex cable has a pull strength of 1. Bending Limits. The normal recommendation for fiber optic cable bend radius is the. When not under tension, the minimum recommended. Water Protection. Outdoors, every cable must be protected from water or moisture. A newer. alternative is dry water blocking using a water–absorbent tape or. Most cable manufacturers now offer dry. Crush Loads or Rodent Penetration. Armored cables are used because their strong jackets withstand crushing. Direct burial OSP cables are usually armored or. Armored indoor cables are available with NEC. Fire Code Ratings For Premises Cables. Every. cable installed indoors must meet fire codes. OSP cables can only be. That means the jacket must be. Most indoor cables use PVC. In the United. States, all premises cables must carry identification and flammability. NEC (National Electrical Code) paragraph 7. In. Canada, it’s CEC and other countries have similar cable ratings. These ratings are: NEC Rating Description OFN optical fiber non- conductive OFC optical fiber conductive OFNG or OFCG general purpose OFNR or OFCR riser rated cable for vertical runs OFNP or OFCP plenum rated cables for use in indoor air- handling spaces or plenums OFN- LS low smoke density. Cables without markings should never be installed indoors as they will not pass building inspections! Outdoor cables are not fire- rated and can only be used up to 5. If you need to bring an outdoor cable indoors, consider a double- jacketed cable with PE jacket over a PVC UL- rated indoor jacket. Simply remove the outdoor jacket when you come indoors and you will not have to terminate at the entry point. Grounding and Bonding. Any. cable that includes any conductive metal must be properly grounded and. NEC for safety. Indoor cables rated OFC, OFCG, OFCR or. OFCP and outdoor cables with metallic strength members or armor must be. All composite cables must be properly grounded and. Cable Color Codes. Outdoor cables are generally black but premises cables are color- coded. Questions About AT& T Fiber Optic Cable Installation - AT& T U- verse. All work should be done in existing easements, probably near the existing AT& T Copper Peds (whether rear or front easement)Depending on where you are and what the existing AT& T facilities are in your neighborhood, the process can vary a little bit. In any AT& T region, if totally new Fiber needs pulled, basically AT& T has equipment that will . Probably not even Plowing. Ditch Witch or Pneumatic Missile to put a hole/path underground, and then that hole/path is filled with flexduct conduit, and either Pedestals (stick up out of the ground) or Hand Holes (fiberglass splice boxes that are in- ground, and the access door is flush to ground level) will be placed at the ends of the conduit runs, where the Fiber Network can be accessed. Most likely, individual Service Drops (which extend from the pedestals/hand holes to individual houses) will not be installed until a potential Subscriber orders service. Then, a new Service Fiber is connected to the Fiber in the hand hole or ped, and temporarily laid above ground, from that hand hole/ped to your house, and a bury crew comes later and buries it. That drop will then terminate to an AT& T ONT Interface on the side of the house, and from there, Ethernet would be used to connect to the AT& T modem and POTS service can be connected from the phone lines - - only if service is ordered will anything be done to your physical house wiring. As far as existing utilities, it is possible when any work is done that something may get damaged or cut - - that is simply human nature - - but Utility Locate Services are responsible for marking Public Utilities, and AT& T is responsible for observing the rules. Locators aren't always perfect. Also, if there are Pet Invisible Fences, Irrigation Systems, Private Utility Lines underground going to say a pool or shed, etc - - those are the responsibility of the Property Owner to mark, not Public Utility Locating services. I guess if it is a HOA managed Irrigation System, it may be on the HOA to locate the Irrigation System? If you are in the Legacy Bell. South/AT& T South. East region and utilize the existing FTTC/IFITL system, there are slight differences to what all needs done, but it is pretty similar. The difference there is the neighborhood already has Fiber in the ground across the neighborhood, so instead of new fiber being installed, all that is typically installed are new conduit and hand holes so individual Service Drops have a path from the existing Fiber Peds to customers, under driveways and streets and the like.
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