Question

Why an electricion only replaces a blown off fuse with a wire prepared from tin and lead alloy.why?

Answer 1

HEY MATE HERE IS YOUR ANSWER:-

It is possible to remove the fuse carrier without any risk of electrical shock. ... The main metals or alloys used in making fuse wire include lead, tinned copper, aluminum or tin lead alloy. When there is an over surge that causes the fuse element to blow off, it can be replaced.

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Answer 2

Fuse is a safety device which is actually a alloy made of tin and lead.this help in the control of overflow of current as it have a low melting point.when more current flows through it the heat increases due the joules law of heating(i^2rt). And gets melted .when fuse is gone only the alloy gets burnt or melted and nothing wrong with the circuit.