Electrical Grounding or Earthing

Electrical Grounding or Earthing : Electrical Grounding

Electrical Grounding or Earthing is a preventive measure to assure that all metal parts of a circuit or home electrical wiring is properly grounded or is connected directly to the earth. It is now essential that all 120- and 240-volt circuits have proper grounding.  Here is a basic explanation of electrical grounding.

What is Electrical Grounding or Earthing?

Electrical grounding or electrical earthing is a wiring system to allow any spikes in electricity to be directed away from the electric circuit into the ground (earth) where it is harmlessly absorbed.

What Is The Function Of Electrical Grounding And Why Is It Important?

Electrical grounding does nothing during normal operation, but in case of any malfunction, it protects you from electric shock or even fire. Electric shocks and fire can occur at places where there is electricity and conductive material. Proper electrical grounding routes any unwanted electric charge to the earth thus preventing electric shocks and fire.

How to do Electrical Grounding

How electrical grounding will be done depends on the wiring method of your home. If you have used metal enclosure to run wire, the enclosure itself can act as the grounding path. If you have used nonmetallic sheathed cable (NM), you must run a separate grounding wire with the circuit wires. It is always better to do the wiring for grounding when doing electrical wiring for the home. It may get difficult later. Also, all electrical wiring and grounding should always be done by professional and certified experts only. Whatever grounding method you adopt, the motive and the end result is the same. It provides a path for unwanted or fault current leading to the neutral bus bar in the service entrance panel, which is grounded through the grounding electrode conductor.

Are there any Rule or Code for Electrical Grounding?

Yes, you can read this principles of electrical grounding. All circuits in a house should be grounded for safety. Receptacles in kitchen, bathroom, and outdoor receptacles need to be properly grounded under the norms of GFCI – Circuit breaker and receptacle-type GFCIs may be installed in your home by a qualified electrician. Different countries may have different electrical norms and rules. Please check your local code.

Summary

Electrical grounding, in homes and commercial buildings, is as important as the electrical wiring itself. All electrical groundings should be done by professional and experienced electricians or technicians only. Someone with no prior experience in electrical wiring or grounding should never try DIY electrical grounding.

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