Overhead Wire

Overhead Wire

 

(also a trolley wire), a flexible wire of a contact system that provides a sliding contact for a moving current collector. Such a wire is solid, with two lateral, longitudinal grooves in its upper part that are gripped by the suspension fittings. Overhead wires usually have a circular cross section; less frequently an oval cross section that narrows vertically is used. The wires are made of copper, sometimes with strengthening additives. To reduce wear of the contact surface, bimetallic over-head wires (copper or aluminum wires with steel inserts) are also used.

References in classic literature ?
The storm had struck the overhead wire of the tramline, and one of the great supports had fallen.
Approximately 600 metres of overhead wire was damaged near Retford and this affected the whole of the East Coast service between Scotland and London Kings Cross The disruption meant East Coast had to suspend services for several hours and cancel certain trains.
Temperatures in the West Midlands plunged to minus four on Monday night but an overhead wire problem causing rail delays between Walsall and Birmingham New Street was yesterday's only significant travel headache.
While Civil Defence officials said the fire started because of a leaking cooking gas pipe that was covered in cooking oil, one cook said the fire started as a result of a short circuit in an overhead wire that led to sparks falling on the oil.
Bhopal, May 14 (ANI): At least Twenty eight people were on Friday electrocuted when the bus in which they were travelling came in contact with a live overhead wire near a village in Madhya Pradesh's Mandla District.
The use of inappropriate resin clips led to the overhead wire trouble that left thousands of passengers trapped on trains in Tokyo on Tuesday, officials of East Japan Railway Co.
The Governor also directed the Chief Executive PESCO and GM Development PTCL both present on the occasion to immediately remove the underground as well as overhead wire from the building site to ensure smooth construction activity.
It seems the political will to put overhead wire across the country may not be there.
A BOY of 16 raiding an electricity substation was electrocuted when he touched an overhead wire.
A recent statistic shows for instance, that 65 per cent of job site electrical shock fatalities are caused, not by improper electrical procedures, but by peripheral occurrences such as a crane coming in contact with overhead wire, putting workers on the ground in jeopardy.
The trailer is capable of lifting and carrying two medium or four small overhead wire reels for stringing out one-phase or three-phase power.
The shots from the overhead wire camera added a totally new dimension, while the piece de resistance was the view from the jockey camera carried by Richard Hughes aboard Harmonic Way, the winner of the Wokingham.