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Question
how to check the earth resistance value& what is the 
minimum earth resistance for good earthing sysytem.
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
value of the earth pit should be less then 2 ohm and earth grid value should be <1 ohm 
Is This Answer Correct ?    291 Yes 38 No
Jaydeep Parmar
 
Answer
# 2
The earth resistance value can be checked by the use of
earth resistance tester (called megger earth tester). The
best earth resistance should be less than one ohm but the
permissible value is less than 5 ohm. For rocky areas it
should be less than 8 ohms.
 
Is This Answer Correct ?    201 Yes 29 No
Tauseef Tarique, Engineer(e)
 
 
 
Answer
# 3
By using earth megger .It should be less than 2ohm. 
Is This Answer Correct ?    170 Yes 47 No
Aruna Devi
 
Answer
# 4
Grid resistance value should be lessthan 1 ohm 
Is This Answer Correct ?    143 Yes 21 No
Pandiyarajan
 
Answer
# 5
as per the IEEE standards it should be less than 1 Ohms 
Is This Answer Correct ?    120 Yes 24 No
Ramniveth
 
Answer
# 6
earth tester use for measuring resistance of earth pit
should be less than 1 ohm.
 
Is This Answer Correct ?    66 Yes 15 No
Bhavini
 
Answer
# 7
As such there is no any standard of earth resistance value,
Its varies on different type of soil resistivity. Idley it
should be 0, but in different kinds of soil for electrical
equipment it should be better to below 10 Ohms and for
electronic equipment it should be better to below 5 ohms.
 
Is This Answer Correct ?    63 Yes 18 No
Praveen Kumar Jain
 
Answer
# 8
earth testers are used. and it is checked wheathe earh
resistance range is from 1-2 ohm or not.
 
Is This Answer Correct ?    59 Yes 31 No
Bhanu
 
Answer
# 9
The earth resistance value can be checked by the use of
earth resistance tester (called megger earth tester). The
best earth resistance should be less than one ohm but the
permissible value is less than 5 ohm. For rocky areas it
should be less than 5 ohms.

we using the DMM in check the L - N , N- E ,E- L
this small calc
L-N - 230 v
N-E - BELLOW THE 2 VOLTS IS GOOD ERATH CONN
E-L - 230v IS RECONFORM TO GOOD EARTH OR NOT
L-N = E-L
 
Is This Answer Correct ?    28 Yes 5 No
Ramaraj.g
 
Answer
# 10
It should be near <0.5 ohm for good earthing. 
Is This Answer Correct ?    24 Yes 7 No
Bk Sharma
 

 
 
 
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