Shield wires are grounded to provide a path to ground for which conditions?

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Multiple Choice

Shield wires are grounded to provide a path to ground for which conditions?

Shield wires (static wires) are grounded to give lightning and static charges a direct path to earth. The energy from a lightning strike or the buildup of static electricity on the line will seek a low-impedance route to ground. By intercepting that surge with a grounded shield wire, the energy is carried away from the phase conductors and discharged safely through grounding paths at the towers and along the line. This helps prevent high voltages from appearing on the energized conductors, reducing the risk of arcing, equipment damage, or safety hazards. Wind and temperature changes themselves don’t create the kind of surge these grounds are meant to handle, and insulation failures are addressed by protective systems rather than the shield wire grounding alone.

Shield wires (static wires) are grounded to give lightning and static charges a direct path to earth. The energy from a lightning strike or the buildup of static electricity on the line will seek a low-impedance route to ground. By intercepting that surge with a grounded shield wire, the energy is carried away from the phase conductors and discharged safely through grounding paths at the towers and along the line. This helps prevent high voltages from appearing on the energized conductors, reducing the risk of arcing, equipment damage, or safety hazards. Wind and temperature changes themselves don’t create the kind of surge these grounds are meant to handle, and insulation failures are addressed by protective systems rather than the shield wire grounding alone.

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