What is the min and max ohmic value for earthing?

Answer Posted / sham

it's depend on system
Basicaly for LV system it should be less than 1 ohm and
for MV system it should be in rage of 1 to 5 omh
ideal is 0 resistance but practically it is not possible

Is This Answer Correct ?    43 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the difference between ups & inverter

5521


Please explain, how to test vector group of tranformer(Delta y1) . Thank

1226


What is “pu” in electrical engineering?

675


WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ

1670


ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?

2465






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

1257


what is the differences between microprocessor and general purpose computer

1642


how to find impedance , mutual indatnce in transmission lines

1674


What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

1995


Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?

1415


1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.

2782


What cmos is and its benefits?

673


What is the formula to find out two phase active & reactive power

1703


If the earth is a good conductor of electricity, why don't people get shocked every time they walking on earth?

1313


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?

1786