Question

What is the role of fuse, used in series with any electrical appliance? Why should a fuse with a defined rating not be replaced by one with a larger rating?

Answer 1

Step 1: Fuse

A fuse is a device that protects appliances against short-circuiting as well as overloading. The fuse is typically rated for a maximum current and therefore will blow if a current greater than even the rated amount passes through it.

1. Fuse is a thin wire composed of tin as well as lead in a $75:25$ ratio.
2. Whenever the current surpasses the prescribed limit, the fuse melts and separates the circuits, safeguarding the household appliances.

Step 2: A fuse with a defined rating not be replaced by one with a larger rating

1. If a fuse is changed with one with a higher rating, the pieces of equipment might get destroyed whereas the protective fuse remains in place.
2. This practice of utilizing an improperly rated fuse should indeed be avoided at all costs.