Difference between Grounding and Earthing:
There is no major difference between earthin g and Grounding, both mean s “Connecting an electrical circuit or device to the Earth”. This serves various purposes like to drain away unwanted currents, to provide a reference voltage for circuits needing one, to lead lightning away from delicate equipment.
Even though there is a micro difference between grounding and earthing:
Grounding
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Earthing
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Definition
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Grounding means connecting the
live part (it means the part which carries current under normal condition) to
the earth for example neutral of power transformer.
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Earthing means connecting the
dead part (it means the part which
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Difference in Terminology
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Grounding is the
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Earthing is used in European, Commonwealth
countries and Britain standards like IS and IEC etc.
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Purpose
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Grounding refers the current
carrying part of the system such as neutral (of the transformer or
generator).
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The purpose of
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Balancing the Load Vs Safety
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Ground is a source for unwanted currents
and also as a return path for main current sometimes.
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Earthing is done not for return
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When we take out the neutral
for a three phase unbalanced connection and send it to
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While earthing is used between the equipment
and earth pit so as to avoid electrical shock and equipment damage.
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Equipment Protection Vs Human Safety
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Because of lightening, line surges or
unintentional contact with other high voltage lines, dangerously high
voltages can develop in the electrical distribution system wires. Grounding
provides a safe, alternate path around the electrical system of your
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Earthing is to ensure safety or Protection
of electrical equipment and Human by discharging the electrical energy to the
earth. Earthing is a preventive measure.
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Example
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Grounding of neutral point of a
star connected transformer.
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Earthing of electrical
equipment’s frames, enclosures, supports etc.
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