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How does use of a fuse wire protect electrical appliances?

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Fuse wire is a short length thin wire generally made of tin and lead in the ratio of 3:1.
If the supply become high-voltage which exceeds the current then after reaching at a
specified value of current, the fuse wire melts and breaks.
As the fuse wire melts, the circuit of the whole household breaks and thus household appliances get protected from damage.

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Deependra Verma

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