Grounding of the metal outer sheath of the optical cable
In installations where an optical fiber cable is exposed to contact with electric light or power conductors and the cable is terminated on the outside of the building, the non–current carrying metallic members shall be either grounded as specified in 770. Armored cables or composite/Hybrid cables consisting of any metallic part are often installed in a network for added mechanical protection, traceable purpose or for power transmission which in cumulative provides extra protection for the optical fiber with added reliability for the network. Grounding is classified into three different types: protective grounding, operational grounding, and lightning grounding. Removal of the shield ground, either intentionally or accidentally, can disturb the voltage distribution in the cable insulation, which.
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