what is the resistance value of earthing pit and why they
are connected?

Answer Posted / pradeep kumar dhar

The resistance value varies according to the nature of the
soil.It is very high for rocky soils.A value of 1 ohm or
less is considered to be very good.Several pits are
interconnected to reduce the value of earth resistance.

Is This Answer Correct ?    20 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is meant by surge? what we called for high currents?

1496


is IS says that neutral should be brought to switch box. and this one is a recomended practice

1436


i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1458


If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses

1353


"TRANSFORMER MODELING AND ANALYSIS" MEANS WHAT AND WHICH TOPICS U READ IN THIS

1427






WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2059


can i connect wavetrap in 2 different phase in EHV line?

1371


Leakage current,un balance current which relay using for high voltage transmission?

1643


How is the gain affected by the introduction of feedback in a control system.

749


Why front mounted CT polarities are always towards breaker?

1527


What are the conditions for sustained oscillator or what is backhouse criterion?

653


How to test lightning Arrester?

405


Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?

724


what is meant by twilight switches 7 where its applicable ?

1426


Explain how you intend to work under pressure to meet up with deadline target?

4720