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
what is accuracy ? in any meters , coils accuracy . how can u defined that ?
how to calculate vfd o/p voltage by frequency
what is the use of power transformer in GSS.
Wt is the function of reactive power? How it generates & consume though resultant is zero?
th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.
EXPLAIN THE TRANSFORMER MAINTENANCE?
What are the disadvantages of autotransformer?
difrent between vcb acb sf6 and mccb breakers
What is meant by RVT and NDR ? expansion and details of it
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
what is the difference between surge protection capacitor and surge arrestor
diff. between tension mode & speed mode
What are the material used for resistor?
What is the difference between alternator and generator?
What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?