how to check the earth resistance value& what is the
minimum earth resistance for good earthing sysytem.
Answer Posted / bhushan
value depends upon the soil resistivity but in reality it
should be zero to get better result. As per recommendation
by NFPA and IEEE it should be less then 5 ohms.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?
what is the difference between general inverter and solor inverter clerly explain plz
I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.
Why air circuit breaker off due to power failure?
What is load boxes ?
why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?
What is non-minimum phase transfer function?
What is the differance between 2 dc motors of armature voltage 660 v and 440 v?
kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased
what are the applications of TIG welding
What is transmittance?
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.
What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.
Dear sir, I have completed DECE in the year 1995. I have work experience in HT and LT LINE more than five years. Now i am doing BE in EEE from rajasthan university. After completion of BE,can i apply "C" Licence sir? Please reply.
WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?