Outdoor-rated cables are designed to be used outdoor, but they are not recommended for direct burial unless a conduit is used. 101 describes characteristics, construction and test methods of optical fibre cables for buried application. Note that Recommendation ITU-T L. With an assortment of types being sold—armored, non-metallic, aerial, buried, and self-supporting, as well as ribbon—you will have to know how to choose. Choosing the right fiber optic cable for outdoor deployment is not like picking an indoor patch cord. Outdoors, cables must survive ice loading, wind-induced vibration, prolonged UV exposure, temperature swings from -40°C to +70°C, and—when co-located with power infrastructure—electrical stress. Outside plant cable designs are optimized for the application type. ) Underground cables are generally installed in conduit which is usually a 4 inch (10 cm) conduit with several innerducts for.
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