why can't we use a copper wire as a fuse wire
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Copper has a higher melting point than the tin used in fuse wire. So, when a high level of current runs through copper wire, it continues to heat but will not melt. Instead, it causes a short circuit - potentially ruining your appliance and sparking a fire.
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this is because copper have high melting point 1080 degree Celsius
so it will not melt even if the current exceeds its safe limit
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