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Q.

In Electrical engg, what is the difference between "neutral" and "earthing"?

Tags: electrical engg
Asked by iftekhar saahil ahsan, 05 Jul '11 01:32 pm
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Answers (3)

1.

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 are used synonymously here. Normally a grounding conductor does not carry current.

Neutral is a circuit conductor (that carries current in normal operation), which is connected to earth (or ground) generally at the service panel with the main disconnecting switch or breaker.
Answered by LIPSIKA, 05 Jul '11 01:41 pm

 
  
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2.

Neutral is return path for electric current ,
Earthing can be return path during faults only .
Answered by Vilas Deshpande, 12 Aug '11 12:11 pm

 
  
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3.

Since the neutral point of an electrical supply system is often connected to earth ground, ground and neutral are closely related. Under certain conditions, a conductor used to connect to a system neutral is also used for grounding (earthing) of equipment and structures. Current carried on a grounding conductor can result in objectionable or dangerous voltages appearing on equipment enclosures, so the installation of grounding conductors and neutral conductors is carefully defined in electrical regulations. Where a neutral conductor is used also to connect equipment enclosures to earth, care must be taken that the neutral conductor never rises to a high voltage with respect to local ground.

In a polyphase or three-wire (single-phase) AC system, the neutral conductor is intended to have similar voltages to each of the other circuit conductors. By this definition, a circuit must have at least three wires for one to serve as a neutral.
In the electrical trade, the conductor of a 2-wir ...more
Answered by ankit shivam, 05 Jul '11 02:52 pm

 
  
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