What are the various methods for effecive earthing in a factory in a rocky ter

What are the various methods for effecive earthing in a
factory in a rocky terrain, where soil resistivity is
extraordinarily high? The usual method of 3 m deep earth
pits is not serving the purpose.

Question Posted / minimanu

4 Answers
13010 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil res..

Answer / ashish

If Earthing Resistance Value is more than minimum specified
value & one pit can not serving the you have to provide
Three to Four Earthing Pit Which are Interconnected
Together Making The Earthing Mat So The Total Effective
Value Will be Less.

Is This Answer Correct ?

15 Yes

3 No

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil res..

Answer / joby

here the soil resistivity is high. so mat earthing is provided

Is This Answer Correct ?

15 Yes

4 No

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil res..

Answer / brian

Import good black soil from some where else,mix it with alot
of salt and charcoal dust, dig atleast 2 pits in a space of
10metres apart.
Let each pit have its own earth mat and burry it wit the
mixture mentioned above ie salt, black soil and charcoal
dust and then bond or interconnect the earth mats wit an
earthwire of ATLEAST 35mm2.
Finally pour alot of water in the pits.

Is This Answer Correct ?

6 Yes

0 No

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil res..

Answer / blake australia

There are some powders which harden (i.e. erico make some I
think). Generally would drill a fairly deep hole. insert
earthing rod and surround with these earthing enhancers.
Try to avoid gell or powder forms of earth enhancer as they
tend to wash away when it rains

Is This Answer Correct ?

7 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

why protection meter is always connect to star

1 Answers

WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR 5PHASE

18 Answers

What happened when capacitor connect series in ac circuit?

0 Answers

What is the difference between acs 550 & acs 850

0 Answers Madhucon,

what is the procedure for erection of a transformer

1 Answers TCE,

what is the right method of laying cable tray if we are using EOT crane in shed, better is below or up

1 Answers

in shunt clippers why a resistor is used in sereis with the input

0 Answers

distribution is maximum done by a)radial b)network c) parallel d)b & c

0 Answers

What do you mean by dependent and independent voltage sources?

0 Answers

How many 2 ton window A/c can runs on a 125 KVA generator?

2 Answers

draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

1 Answers

For electrical designers what are the standard should know? i want learn about this standards. how to get information/reference. anybody help in this regards please.

0 Answers

For more Electrical Engineering Interview Questions Click Here