Editing Overhead power line (section)

==Construction==
[[File:Electricity pylons 330kV in Ukraine.png|thumb|200px|330&nbsp;kV overhead power lines]]

Towers for support of the lines are made of wood (as-grown or laminated), steel or aluminum (either lattice structures or tubular poles), concrete, and occasionally reinforced plastics.  The bare wire conductors on the line are generally made of aluminum<ref>{{Cite web |last=Daware |first=Kiran |date=2017-03-20 |title=Types of Conductors Used in Overhead Power Lines |url=https://peakdemand.com/types-of-conductors-used-in-overhead-power-lines/ |access-date=2025-01-29 |website=Peak Demand Inc |language=en-US}}</ref> (either plain or [[ACSR|reinforced with steel]], or composite materials such as carbon and glass fiber), though some copper wires are used in medium-voltage distribution and low-voltage connections to customer premises. A major goal of overhead power line design is to maintain adequate clearance between energized conductors and the ground so as to prevent dangerous contact with the line, and to provide reliable support for the conductors, resilience to storms, ice loads, earthquakes and other potential damage causes.<ref name="Fink78">[[Donald G. Fink]] and H. Wayne Beaty, ''Standard Handbook for Electrical Engineers, Eleventh Edition'', McGraw-Hill, New York, 1978, {{ISBN|0-07-020974-X}}, Chapter 14 ''Overhead Power Transmission''</ref>
Today,{{When|date=January 2025}} some overhead lines are routinely operated at voltages exceeding 765,000 volts between conductors, with even higher voltages possible in some cases.