Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?
- 1 Answers
- 4082 Views
- I also Faced
- E-Mail Answers
Answer Posted / manohar
The resistivity of Earth is 100 ohm-m compare this with
resistivity of copper which is 1.7 x 10-8 ohm-.m (
0.017ohm-mm2-m) & that of GI is 1 x 10-7 (0.1ohm
-mm/m),definitely neutral earth is more resistive than
copper or GI.eVEN INDIAN STANDARD recognasises this fact.It
mention in the clause 0.3 that the "the earth now rarely
serves as part of the return circuit, but is being used
mainly for fixing the voltage of the system neutrals"
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
Earth has zero potential then what would be the neutral potential ?
I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?
Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings
Starting current of a 10 HP induction Motor is ______ time’s full load current.
XYZ
solar energy light efficiency & disadvantages?
please send previous exams question papers
How to calculate loses in transformer of 160 KVA ?
What is a slack bus?
Why are the laminations insulated from each other?
How to measure size of cable on a given load
How to size Air Circuit breaker (ACB)? What is the most important factors?
What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?
what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value
what are the main applications of transistor in non-linear region?
