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All wires conduct electricity, since wire is always made of metal, and all metals are conductors.

Copper is preferred though, as it has the highest electrical conductivity rating of all non-precious metals. It is also very ductile when annealed, so can be drawn into wire of anything down to sub-millimetre diameters.

Other metals are used for other properties. Aluminum wire has a higher conductivity to weight ratio and lower cost, for instance.

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10y ago

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