Question

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

Answer 1

Answer:

The main function of the earth wire is to prevent live wire from overloading and absorbs the excess electrons & flows to beneath the ground . It is necessary because it prevents the electrical appliances from damage and absorbs the excess electricity from appliances.

Hope it helps

Answer 2

Explanation:

-The earth wire connects the metallic body of high powered appliance to the earth.

-It is a safety measure which ensures any leakage of current of the metallic body of the appliance keeps it's potential equal to that of the earth (zero volt) and the user may not get a severe electric shock