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.

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is mean by dry frequency

1945


what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?

1486


How to select a cable size for particular load?

1337


Is a direct shorth ciruit on a branch MCCB in a Low Voltage Switchboard a correct means of tesing the performance for discrimination?

1768


Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.

2029






what is meant by impulse voltage?

1550


he compression ratio for a petrol engine generally lies between

709


What is the difference between the relay and the circuit breaker?

614


Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

1710


what is integrated ac contact circuit

1648


nwhat are the main Components of servo motor?

1626


how we calculate torque ? how we improve it ?where torque will either motor or generator ?

1577


What is the difference between isolators and electrical circuit breakers? What is bus-bar?

682


i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.

1330


What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.

3024