Need of Earthing

  • Besides human safety risks, sensitive computers and electronics devices fail to operate properly and/or sustain damage at lower voltages which usually cannot be felt by humans, resulting in loss of productivity and expensive troubleshooting & repairs.
  • Current also passes through the least path. In case of fault current, short circuit there is two options available for its dissipation into the earth:

Current may take the path of earthing

or

Current may take the path of human body of the affected person

  • This depends on the least resistance of path between the two. Hence the resistance of the earthing should be always be lesser than the resistance of the human body.
  • Earthing is absolutely necessary to protect human life and equipment from electrical hazards in this electronic age.

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