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Автор: Jesse Russell
Год: 2013
Издание:
Книга по Требованию
Страниц: 68
ISBN: 9785508935801
High Quality Content by WIKIPEDIA articles! A utility pole is a pole used to support overhead power lines and various other public utilities, such as cable, fibre optic cable, and related equipment such as transformers and street lights. It can be referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole,telegraph pole, or telegraph post, depending on its application. A stobie pole is a multi-purpose pole made of two steel joists held apart by a slab of concrete in the middle, generally found in South Australia. Electrical cable is routed overhead as an inexpensive way to keep it insulated from the ground and out of the way of people and vehicles. Utility poles can be made of wood, metal, concrete, or composites like fiberglass. They are used for lower voltage power transmission; higher voltage transmission lines are carried on steel transmission towers. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в...
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Jesse RussellJesse Russell
Jesse RussellUtility pole
David J.GordonThe Nile of Australia. Nature's gateway to the interior. A plea for the greater utilization of the Murray and its tributaries