Overhead cable

An insulated or bare conductor suspended above ground on poles or towers to carry electrical power or signals. Its elevation keeps it clear of ground-level obstacles while supporting long-distance routes.

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Transmission tower: A tall structure that supports overhead conductors, usually at high voltage. Towers hold cables at the height and spacing required along transmission routes.
Electrical conductor: A material or object that permits electric charge to flow readily. An overhead cable functions by providing a conductive path for power or signals.
Electric power transmission: The bulk transfer of electrical energy from generating stations toward population and industrial centers. High-voltage overhead cables carry power across long distances between grid nodes.
Underground cable: An insulated electrical cable installed below ground, directly buried or placed in a conduit. Underground cables avoid visual exposure but cost more to install and repair than overhead routes.
Insulator: A component that resists electric current and separates an energized conductor from its support. Insulators attach energized overhead cables to grounded poles or towers.
Stranded wire: A conductor composed of multiple smaller wires twisted or bundled together. Stranding makes many overhead conductors flexible enough to handle installation and wind.
Electric power distribution: The delivery of electricity from substations to homes, businesses, and other end users. Utility poles carry overhead cables through local distribution networks.
Submarine power cable: An insulated cable designed to transmit electrical power across or beneath bodies of water. Submarine cables serve routes where a suspended overhead line cannot cross the terrain.
Sag-tension calculation: An engineering calculation relating a suspended conductor's sag, tension, temperature, and span. Cable tension and sag must remain within limits as weather and temperature change.
Aluminium-conductor steel-reinforced cable: An overhead conductor with aluminium strands surrounding a steel reinforcing core. This common design combines aluminium conductivity with steel tensile strength.