why are wires made of metals like aluminium or copper and not of carbon or sulpher
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because aluminium or copper are good conductor of electricity.
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Copper is the first choice since it has a low electrical resistance. That means that it will lose less power from one end to the other on a specific load, wire gauge and voltage.
Aluminum is used in some cases where weight is a factor. In the 1950’s and 50’s, they built houses with aluminum wiring and only then found that it has to be treated differently since it can loosen the connector screws with the application of each electrical load. It jumps when a heavy surge occurs and that movement would loosen the screws holding down the cable and cause poor conductivity across the joint and lots of heat or even fires.
Aluminum is used in some cases where weight is a factor. In the 1950’s and 50’s, they built houses with aluminum wiring and only then found that it has to be treated differently since it can loosen the connector screws with the application of each electrical load. It jumps when a heavy surge occurs and that movement would loosen the screws holding down the cable and cause poor conductivity across the joint and lots of heat or even fires.
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