Why not use copper, iron, aluminum wire instead of fuse?
Their melting point is greater than or equal to the melting point of the wire, so it can not cut off the current. It burns the circuit or electric appliance. Therefore, copper, iron and aluminium wire can not be used instead of the fuse
When the line is overloaded or the short-circuit current increases, the fuse is dissolved to cut off the current, protect the circuit and the electrical effect. If copper, iron, aluminum wire is used instead,
Wire is a safety device for electrical wiring and electrical equipment
