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Insulated copper clad aluminum wire maintenance and economy of

Do we know, use insulated copper clad aluminum wire can reduce network faults, avoid many problems in the network when they maintained. Due to cables copper conductors with aluminum outer conductor thermal expansion coefficients are different, in the heat of the summer, aluminum outer conductor served larger copper conductor in back, not full access to f head of elastic contact pad during the cold winter months, aluminum outer conductor and shrink large shield off. When using insulated copper-clad aluminium conductor of the coaxial cable, and it with aluminum outer conductor thermal expansion coefficient of small temperature changes, the cable core failure is greatly reduced, improved the quality of the transmission.