What is the difference between Earthing and Grounding?

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vinaya kumar

  • Oct 5th, 2011

in view of electrical both sounds same , earthing system defines the electrical potential of the conductors relative to the Earth's conductive surface. The choice of earthing system can affect the safety and electromagnetic compatibility of the power supply, and regulations can vary considerably among countries.
ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth.

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We need to understand that there are really two separate things we are doing that we call grounding. The first, is to reference our electrical source to earth (usually via connection to some kind of rod driven into the earth or some other metal that has direct contact with the earth). In the US system, this is typically accomplished via a 120/240-3 wire system where neutral has a connection to earth at the source (for residences).

Industrial power that has an earth reference has other means of referencing to earth, but generally all have some direct connection to earth. The exception of course is 480V delta which often has no earth connection.

The second thing we often call grounding is really bonding. that's when we take and connect all the metal parts in our systems that might become energized (such as if a conductor came loose). This is done with equipment grounding conductors or sometimes with conduit or raceway systems.

The key is to get all the metal pieces electrically connected together. All these metal parts are then connected to the electrical reference point (neutral in the case of residences). That way if a hot conductor comes in contact with a piece of metal a current path exists back to the neutral point that causes the branch circuit protector to open up because there is a short circuit.

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eng/ezzat shaht

  • Oct 8th, 2011

it's the same thing where

Ground or earth in a mains (AC power) electrical wiring system is a conductor that provides a low impedance path to the earth to prevent hazardous voltages from appearing on equipment (the terms "ground" (North American practice) and "earth" (most other English-speaking countries) are used synonymously here). Normally a grounding conductor does not carry current.

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kundan malani

  • Oct 19th, 2011

earthing of the wire connected to the body of the machine and the grounding use the all neutral connected to load to ground is called grounding

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This is really most confusing question asked by someone?...... Actually there is no any differences between earthing and grounding... you may say this is language difference as AMERICAN uses=GROUNDING, and BRITISH uses= EARTHING,

But as this question(inspired from differences bet neutral and grounding ) becomes very famous to confuse students, few writers starts differentiating it as........EARTHING: which is connected to dead part all times.

GROUNDING: intentionally connects when needs something to discharge like after C.B opens, we need to ground transmission line for a while so that all charging current gets discharge.

BUT,Again I insist there is no difference at all except language......

As You can see in any book, they write Grounding/Earthing(Grounding or Earthing), they never write Grounding and Earthing

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  • Nov 5th, 2015

What the British call "earthing" in electrical appliances is called "grounding" in North America.

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harsha vardhan

  • May 2nd, 2016

In my case both are similar

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  • Jun 5th, 2016

Earthing is inside of earth with any conductive material and grounding is on top of the earth for machines (grounding can be with high ohms but earthing must be with 0.1 ohms)

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