Why do wi use fuse in household circuit ?

Explanation

1. To prevent damages due to overloading we connected an electric fuse to the household circuit.
2. In this arrangement, the entire current from the mains must pass through the fuse.
3. The fuse consits of a thin wire of low melting point.
4. When the current in the fuse overloaded, the wire will heat up and melt.
5. Now the circuit becomes open and prevents the flows of current. So all electrical devices are saved from damage that could be caused by overload.