What is the min and max ohmic value for earthing?

Answer Posted / ahmed

It depends on the system and the resistivity of the
soil .Minimum is less than 1 ,Maximum is 10 ohms .

Is This Answer Correct ?    7 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?

1514


1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

1693


Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?

1609


A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

2157


Dear sir, By which formula u can calculate for a particular kv line there is a range of mw.

1707






Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

627


What is process of anneling transformer core

1471


If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

1456


how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?

1675


DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

1441


Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

1362


can i use 2000/5A Clamp meter to measure HT cable

1569


what is RNG in the DG synchronizing by PLC?

1630


Draw torque - speed curve and load curve of induction motor? mark operating point ?

1531


Why front mounted CT polarities are always towards breaker?

1527