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An example of a copper alloy conductor is cadmium copper wire, which is used for railroad electrification in North America. [5] In Britain the BPO (later Post Office Telecommunications) used cadmium copper aerial lines with 1% cadmium for extra strength; for local lines 40 lb/mile (1.3 mm dia) and for toll lines 70 lb/mile (1.7 mm dia). [23]
The main grade of copper used for electrical applications, such as building wire, motor windings, cables and busbars, is electrolytic-tough pitch (ETP) copper (CW004A or ASTM designation C100140). If high conductivity copper must be welded or brazed or used in a reducing atmosphere, then oxygen-free high conductivity copper (CW008A or ASTM ...
Copper may also be used in the nacelle (the housing of the wind turbine that rests on the tower containing all the main components), auxiliary motors (motors used to rotate the nacelle as well as control the angle of the rotor blades), cooling circuits (cooling configuration for the entire drive train), and power electronics (which enable the ...
The company was founded in 1897 to produce copper wire for electrical uses. Sumitomo Electric operates in five business fields: Automotive, Information & Communications, Electronics, Environment & Energy, and Industrial materials and is developing in two others: Life Sciences and Materials & Resources.
Copper interconnects are used in integrated circuits to reduce propagation delays and power consumption. Since copper is a better conductor than aluminium , ICs using copper for their interconnects can have interconnects with narrower dimensions, and use less energy to pass electricity through them.
Some terminations on wiring devices designed only for copper wire would overheat under heavy current load and cause fires when used with aluminium conductors. Revised standards for wire materials and wiring devices (such as the CO/ALR "copper-aluminium-revised" designation) were developed to reduce these problems. While larger sizes are still ...
John Ferreol Monnot, metallurgist, the inventor of the first successful process for manufacturing copper-clad steel. Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical strength of steel with the conductivity and corrosion resistance of copper.
Copper is used in roofing, [21] currency, and for photographic technology known as the daguerreotype. Copper was used in Renaissance sculpture, and was used to construct the Statue of Liberty; copper continues to be used in construction of various types.
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