Color rings of 36-core OPGW optical cable
Fiber 1 to Fiber 12: Blue, Orange, Green, Brown, Slate, White, Red, Natural, Yellow, Violet, Rose and Aqua. AFL AlumaCore OPGW (Optical Ground Wire) is preferred for its central aluminum pipe and color-coded fiber optic buffer tubes which simplify the splicing process while providing optimum fiber protection as well as long term product reliability. Application OPGW is mainly applied in communication line of newly constructed high voltage transmit electricity system with 35 KV or above, or replacement of existing ground wire of previous overhead high voltage transmit electricity system. The cable contains optical fibers for data transmission and telecom purposes and is installed instead of a ground wire. Fiber 13 to Fiber 24: same base color but with one black ring mark at regular interval.
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