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Other common utility pole materials are aluminum, steel and concrete, with composites (such as fiberglass [citation needed]) also becoming more prevalent. [10] One particular patented utility pole variant used in Australia is the Stobie pole, made up of two vertical steel posts with a slab of concrete between them.
The poles are fireproof, rotproof, and termiteproof. Stobie poles are widely regarded in Australia to be dangerous to vehicles, with collisions sometimes "almost cutting the vehicle in half". [9] [10] [11] Stobie pole designs are calculated to ensure the installation uses a suitably sized pole.
For a single wood utility pole structure, a pole is placed in the ground, then three crossarms extend from this, either staggered or all to one side. The insulators are attached to the crossarms. For an "H"-type wood pole structure, two poles are placed in the ground, then a crossbar is placed on top of these, extending to both sides.
The SWIS reaches from Albany in the south, Kalbarri in the north and Kalgoorlie in the east of the state and includes the Perth metropolitan area. [3] The Western Power network consists of more than 103,000 km (64,001 mi) of powerlines, 825,788 poles & towers, 276,000 streetlights and 154 transmission substations.
Koppers Carbon Materials and Chemicals are used in the production of a variety of manufactured goods including aluminum, steel, plastics, resins, treated wood, and rubber products. These products also increase the durability and extend the life of products such as railroad ties, utility and transmission poles, and marine pilings. [9]
Rural distribution is mostly above ground with utility poles, and suburban distribution is a mix. [1] Closer to the customer, a distribution transformer steps the primary distribution power down to a low-voltage secondary circuit, usually 120/240 V in the US for residential customers.
A linesman working for Country Energy in Australia closing a circuit using a hot stick. In the electric power distribution industry, a hot stick is an insulated pole, usually made of fiberglass, used by electric utility workers when engaged on live-line working on energized high-voltage electric power lines, to protect them from electric shock.
Poles, from which these buildings get their name, are natural shaped or round wooden timbers 4 to 12 inches (100 to 300 mm) in diameter. [4] The structural frame of a pole building is made of tree trunks, utility poles, engineered lumber or chemically pressure-treated squared timbers which may be buried in the ground or anchored to a concrete slab.