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What is the cause of a blown fuse?

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Answer:

The purpose of a fuse is to restrict amperage traveling through an electrical circuit to a specified value. It does this by inserting itself into the circuit and running the current through a metal strip inside the fuse. When the circuit is carrying to much amperage the metal strip will heat and then melt away, breaking the circuit and protecting anything that would be damaged due to the overload.

First answer by ID0000000000. Last edit by Arashai. Contributor trust: 13 [recommend contributor ]. Question popularity: 3 [recommend question].

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