Do you know how to measure the earth resistance? if so
explain it




Answers were Sorted based on User's Feedback



Answer / dinesh. r

Actually the Earth resistance is measured using "earth
resistance meter". In previous answers some said that using
megger, but megger is used only for high resistance
measurement i.e., in Megaohms but when considereing upon
earth resistance it should not exceed 1ohm so earth
resistance meter is required.

In this meter there will be four terminals(E, P1, P2, P3)
in which E and P1 will be shorted and connected to the grid
or electrode and P2 and P3 are reference electrodes which
will be kept on the earth surface on two different
locations for taking the reference resistances of the earth.

The meter shows the resistance of the earth. But it is
neccessary that it should be below 1ohm.

Is This Answer Correct ?    430 Yes 25 No

Answer / shanmu

Earth Resistance is measured by the device'EARTH MAGGER'.

Is This Answer Correct ?    292 Yes 107 No

Answer / priyadharsini

Earth resistance can be measured using Megger instrument.

Is This Answer Correct ?    331 Yes 166 No




Answer / ankaraju.k

Earth resistance meter

Is This Answer Correct ?    190 Yes 67 No

Answer / dinesh kumar

1.To measure earth resistance we use Earth Resistance
Meter/Megger.
2.In this Megger there are three terminals
Line,Nuetral&Earth.
3.Line & Nuetral are connected to two terminals and EARTH
Terminal to earth pit to be measured for resistance.

Is This Answer Correct ?    168 Yes 77 No

Answer / r.sarkar

Actually the Earth resistance is measured using "earth
resistance meter". In previous answers some said that using
megger, but megger is used only for high resistance
measurement i.e., in Megaohms but when considereing upon
earth resistance it should not exceed 1ohm so earth
resistance meter is required.

In this meter there will be four terminals(E, P1, P2, P3)
in which E and P1 will be shorted and connected to the grid
or electrode and P2 and P3 are reference electrodes which
will be kept on the earth surface on two different
locations for taking the reference resistances of the earth.

The meter shows the resistance of the earth. But it is
neccessary that it should be below 1ohm.

Is This Answer Correct ?    108 Yes 19 No

Answer / ullas

using two methods:
1.fall of potential method
2.earth tester(device)

factors affecting earth resistance are
1. Shape & material of the earth electrode.
2. Depth of the electrode at which they r burried in soil.
3. Specific resistance of the soil surrounding the electrode

(Specific resistance of the soil varies depending on
moisture content in the soil..... varies from 80*10^3ohm-m
to 80*10^6ohm-m)

Is This Answer Correct ?    73 Yes 19 No

Answer / k.viswanathan

Actually the Earth resistance is measured using "earth
resistance meter". In previous answers some said that using
megger, but megger is used only for high resistance
measurement i.e., in Megaohms but when considereing upon
earth resistance it should not exceed 1ohm so earth
resistance meter is required.

In this meter there will be four terminals(E, P1, P2, P3)
in which E and P1 will be shorted and connected to the grid
or electrode and P2 and P3 are reference electrodes which
will be kept on the earth surface on two different
locations for taking the reference resistances of the earth.

The meter shows the resistance of the earth. But it is
neccessary that it should be below 1ohm

Is This Answer Correct ?    55 Yes 11 No

Answer / mallesha gc

Earth resistance measured by using earth tester.

Is This Answer Correct ?    40 Yes 11 No

Answer / natarajan

In this meter there will be four terminals(E, P1, P2, P3)
in which E and P1 will be shorted and connected to the grid
or electrode and P2 and P3 are reference electrodes which
will be kept on the earth surface on two different
locations for taking the reference resistances of the earth.

The meter shows the resistance of the earth. But it is
neccessary that it should be below 1ohm

Is This Answer Correct ?    24 Yes 14 No

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