Answer / johnringson

Below 1 ohm.

Answer / ramdarkmaster

Earth's resistance will differ from place to place....
it all depend's on soil resistivity... some places it may be red soil, were as in some places it may black cotton soil..
so we need to measure the resistance using earth tester..
but normally it will in few ohms.

Answer / mukesh kumar

Copper earthing should be below 1 and GI Earthing below 3.

Answer / rajesh pal

Value of earthing G.I should be minimun <3 ohm this value we can use for body earth any machine D.G ,Transformer any other
and copper earth value shoul be < 1 ohm it will bettor for Nutruel earth for D.G and transformer and also connect with isolation transformer and some medical machines MRI, CT scan,kottery machine OT and other machine which require.

define electrical field?

6 Answers   L&T,

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What is the function of mid point voltage in battery bank

1 Answers   Jindal Steel and Power,

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wat s reactive power.... how could it be compensated.....

4 Answers   TCS,

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if u give d.c. supply to transformer primary then what happen.&why??????????????

4 Answers   DCS, DRDO, HCL,

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what is field flash

4 Answers   Bhel,

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how CBCT works?

1 Answers  

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What is the difference of grounding and earthing?

6 Answers  

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1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

0 Answers   Bosch,

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what is the difference between AHU and FCU .

1 Answers   JLL,

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why celing fan is running in anti clock wise and table fan is running in clock wised?

5 Answers  

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can you tell me/show me, how to manually synchronize 2 DG. preferred with video.

2 Answers   Cummins,

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what is the working principle of soft-starter & how it diff. from VFD ?????????

5 Answers   L&T,

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