Overhead power line
Above-ground structure for bulk transfer and distribution of electricity / From Wikipedia, the free encyclopedia
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This article is about power lines for general transmission of electrical power. For overhead lines used to power road and rail vehicles, see Overhead line.
"Power line" redirects here. For other uses, see Power line (disambiguation).
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles. Since the surrounding air provides good cooling, insulation along long passages and allows optical inspection, overhead power lines are generally the lowest-cost method of power transmission for large quantities of electric energy.
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (August 2010) |