Do you know how to measure the earth resistance? if so
explain it

Answer Posted / natarajan

In this meter there will be four terminals(E, P1, P2, P3)
in which E and P1 will be shorted and connected to the grid
or electrode and P2 and P3 are reference electrodes which
will be kept on the earth surface on two different
locations for taking the reference resistances of the earth.

The meter shows the resistance of the earth. But it is
neccessary that it should be below 1ohm

Is This Answer Correct ?    24 Yes 15 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

3801


in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

1478


How dia computation perfomed in cold rolling mills .

2568


what is breathing?

1309


HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

3122






although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?

1489


Can we convert off line transformer to on line transformer

1446


which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?

1232


Why front mounted CT polarities are always towards breaker?

1495


Dear all, how we select the cable size according  to current with or without including different correction factor , is there any direct method for sizing of cable... 

1673


what are the difference between AC lamp and DC lamp

1651


Difference between rating factor of cable and derating factor of cable?

1155


What are the protections for safe running of electric generator?

1693


In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

643


hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1517