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
why would amp draw on neutral wire be as much as amp draw on the hot leg.
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
What are the different methodes for calculating the short circuit Current?
what parameters should we check to reduce the power bill
how to find out 3 phase complex power in per unit in unbalanced system?
Air refrigeration cycle works on the
what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct
How to run a three phase motor into single phase........
The simple way of finding the leakage quantity and % in compressed air distribution system
What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?
how to get bearing & winding temperature of an induction motor?
wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?
Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics
one split ac how can told of this ac which Tr tell me us
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans