Question

What is meant by earthing of an electrical appliance? Why is it essential?

Answer 1

1. In order to protect anyone handling the appliance from electrocution, the outer metallic shell of the appliance is earthed.
2. By attaching the equipment to the ground only by using an earth wire, the earthing process is performed.
3. If an earth wire is present, it signifies that the path taken by the current to reach the ground has a very low resistance, shielding the user from a shock.
4. A low resistance conducting path for the electricity is provided by the metallic body's connection to the ground wire.
5. As a result, it guarantees that any current leakage to the metallic body of the appliance maintains its potential to that of the earth, preventing the user from receiving a dangerous shock.