Question

What is the function of an earth wire? Why is it necessary to earth metallic application?​

Answer 1

Answer:

Earth wire is used for earthing

Explanation:

It is necessary to earth metallic application ,because if due to some reason such as short circuiting an excessive current flows in the live wire it will pass to earth through the earth wire if there is local earthing or the current may flow in the live wire and cause fire.