Do you know how to measure the earth resistance? if so
explain it
Answer Posted / harold
You must use a car battery and a volt meter.Take the
battery out of your car and attach a cable to the positive
and negative terminals.Try and start your car,if it doesn't
start that means you have correctly removed the
battery.Stick one end of the positive cable in the
ground,the deeper the better,dig a hole with a shovel if
you have to.Stick the negative cable in the ground at
exactly 38.6390 inches away from the positive cable,this
measurement is extremely important.Now,wait 3 hours and
measure the voltage in the ground between the two cables.A
voltage of 7.75 volts dc or higher indicates proper ground
resistance of .00672 ohms.A lower voltage reading indicates
that the ground resistance is too high.Saturate the area
with water and wait overnight.Take your readings again the
next day and see if they have changed.This is a very
accurate method and it has worked for me every time.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How do you compute voltage drop and cable size over distance?
State the factors, for the choice of electrical system for an aero turbine.
why zero sequence impedance measurement is not applicable for single phase GT
What does the term “voltage regulation” means?
Why computer humming sound occurred in ht transmission line?
What is the basic principle of operation of alternators/dc generators?
how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????
What is pi controller?
How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.
Give some example of fault limiting devices?
tell me about eletrical contractor
what is per unit calculation?looking for simple and strong explanation thk u
what is the AC Plant and how can do the work with parts and picture tell us 150 Tr
why the rotor current becomes in steady state during high slip region? please verify with equations.
75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?