Why is earthing necessary

Posted by Raman Mishra on January 28th, 2020

Earthing protects our electrical equipment and humans in case of failure or accidental short circuit. When the live wire touches the earth wire, a large current flows through it and causes the fuse to blow away or the circuit breaker and thereby protect the equipment as well as the users. The third pin of the electric iron plug is for earthing. The metal body of the electric iron is connected to this pin that's related to the earthing wire. If the live wire comes in contact with the metal body in any way, the earthing wire will allow current to flow into the ground. Thus, to protect the user from electric shock. So earthing is necessary for human life.

 Why Earthing is necessary

Earthing is the process of flow of excessive amount of fault current of the electrical energy directly into the ground with the help of the low resistance wire is called earthing. The electrical earthing is done by connecting the non-current carrying part of the equipment or neutral of the supply system to the ground. It helps in the dissipation of the excessive amount of fault current directly into the ground, and ensure safety.

Earthing is very necessary because of the following reasons:

  • It ensures the safety of human beings from the excessive amount of electric shock.
  • It ensures the safety of electrical appliances and devices from the excessive amount of electric current.
  • It ensures safety from the fire which may be occurred from the current leakage.
  • It provides the way to default current even after the failure of the insulation.
  • Protects the appliances from the high voltage surges and lightning discharge.
  • It provides an alternative path for leakage of current.
  • Earthing keeps the voltage constant in the healthy phase.
  • It protects the Electric system and buildings form lightening.
  • Earthing avoids the risk of fire in the electrical installation system.
  • Earthing is very necessary for some industries and sectors and used in:
  1. Dg Set
  2. Transformer
  3. Lightening system
  4. Solar system
  5. Datacenter
  6. Railways
  7. Highways
  8. Refinery
  9. Power plant
  10. Cement plant
  11. Steel plant
  12. For every electrical installation

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Raman Mishra

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Raman Mishra
Joined: January 28th, 2020
Articles Posted: 2

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