why is a earth pit 10 ft usually? And, what should be the
distance betweeen two earth pit?
Answer Posted / sasi karthick a
Resistivity of the soil will better when depth increases.
Soil resistivity test will conduct and the resistivity will
selected for earthing calculation. As per IS 3043, it
should be twice the length of the electrode.
Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME
What is a differential amplifier?
Why increase in current leads to increase in conductor temperature?
What is the difference between amorphous core transformer and CRGO core transformer?.
Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?
sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.
I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.
how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
static chagre
how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?
What is thresh hold value of current?
What is the difference between Encoder and Resolver?
if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?
where lt & ht capacitor used
diff. between tension mode & speed mode