Question

Why is that a burnt out fuse should be replaced by another fuse of identical rating?

Answer 1

A fuse wire works because of its lower melting point which is possible. If a fuse with larger rating is used with an appliance, the fuse wire shall not melt and hence would fail to serve the required purpose.

Hope it helps ✌✌❤

Answer 2

Because the previous fuse has a particular safety and regulating point for the circuit which has to be replaced by a fuse of same parameters for safety and regulation of circuit reason