Answer / sreenu

It is required to bring earh resistance to min. value
around 1-2 ohms for good earthing and the no.of earthings
to be done varies as per site conditions.

Answer / sanjay vishwakarma

TWO NO.S OF EARTHING ARE FOR BODY & OTHER TWO NO.S ARE FOR
NEUTRAL REQUIRED FOR ALTERNATOR.

Answer / dubai

I must add one point into this conversation as my friends
said-
Two earthings are for body & the same for body.

These earthings are connected in parallel & we lnow that in
parallel connection the effective /resultant resistance
decreases thereby giving a predominant earthing earthing
value.

Answer / vikas

Moreover, if one fails other will act as a stanby earthing
till the other is rectified.

Answer / ravikumar ts (knightfrank)

its realy requires four earthing because, two are
platesystem earthing for neutral & two are pipe earthig for
body.

what is arc flash and what are the hazards involved

0 Answers   Reliance,

Which is stiffer between salient pole rotor and cylindrical rotor synchronous machines? Justify your answer.

1 Answers  

Can anyone explain how the vector diagram of a transformer which doesn't have name plate be found whether it is Dy11/Dy5/Yd11 and so on?

4 Answers   TATA,

our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

0 Answers  

What happen if a 18 watt fluorescent tube is used on 36watt choke,which one damaged or not damaged, if damaged why that damaged?

2 Answers   Bharat ITI,

For what purpose and why ACBs are used

4 Answers  

Please tell me 1 ton = How many Kilowatt (Electrical)

19 Answers   Essar, Mitsubishi, Taj Group, VCMS Technologies, Virtuous Retail,

Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

0 Answers   Siemens,

what is the difference between Resistance VS capacitance

2 Answers   Jindal,

What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

0 Answers  

DC Motors applications used in Lift/Elevators

8 Answers   IOCL, SCS, Usha Martin,

what is the reactive power what is the use of it in system

0 Answers   L&T,