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Anonymous Poster

earth resistance value

11/08/2009 3:20 AM

What should be earth resistance value as per IE rule 1956 or 2003. Is it within 10 ohm? Is resistance value depend on type of load or substation?
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mayt2u
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#1

Re: earth resistance value

11/08/2009 8:32 AM

The answer is yes!

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Anonymous Poster
#2
In reply to #1

Re: earth resistance value

11/08/2009 9:32 AM

Can you provide relevant IE rule?
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Anonymous Poster
#6
In reply to #1

Re: earth resistance value

01/07/2010 11:26 PM

it should be less than 1 ohm
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Anonymous Poster
#7
In reply to #6

Re: earth resistance value

02/14/2011 11:11 AM

We required minimum & mximumvalue of earth resistance

Thanks,

Mali Jagannath
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PWSlack
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#8
In reply to #7

Re: earth resistance value

04/25/2023 7:18 AM

The minimum value of anything is either zero or minus infinity.

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ion mihaiu
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#3

Re: earth resistance value

11/08/2009 12:16 PM

i think it should be less than 4 ohm
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Current Maarey
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#4

Re: earth resistance value

11/09/2009 12:41 AM

For earthing requirements please refer to IS 3043 for installations in India.

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electricalexpert65
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#5

Re: earth resistance value

11/13/2009 4:50 AM

No standard on the globe, mandates a certain maximum permissible value for system earth resistance. Definitely NOT in any of the 143 IE Rules. Wherever the IE Rules mention about the value of earth resistance, it just vaguely says that the earth resistance should be "low enough". But, how much is low enogh? SO is tha case with IS 3043. It also says only "low enough". Even IEEE does not specify a certain maximum permissible earth resitance.

However, there is clause in the Indian National Electric Code, 1985, which says that for equipment earthing the earth resistance should not be more than 5 Ohms.
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Anonymous Poster (3); Current Maarey (1); electricalexpert65 (1); ion mihaiu (1); mayt2u (1); PWSlack (1)

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