What is the purpose of ground wires in over-Head Transmission lines?
Ground wires are bare conductors supported at the top of transmission towers. They serve to shield the line and intercept lighting stroke before it hits the current carrying conductors below. Ground wires normally do not carry current. Therefore, they are often made of steel. The ground wires are solidly connected to ground at each tower in transmission and distribution system.EasyEDA: A Powerful Free Circuit, Simulation & PCB Design Tool
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