How would we calculate the no of earthing pits required
for motor /panel
- 5 Answers
- 22885 Views
- APGenco, National Engineering Industries, Practical Viva Questions, I also Faced
- E-Mail Answers
Answer Posted / g. janakiraman
no off earth pits are decided by considering the total
fault current to be dissipated to the ground in case of
fault and the current that can be dissipated by each earth
pit.
normally the density of current for GI strip can be roughly
200 amps per squre cam. based on the lenght and dia of the
pipe used the no of pts can be finalised. this has to be
worked out.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
how much GROUND & NEUTRAL VOLT maintain in data center.
What happens if we connect a single phase energy meter in reverse polarity.
What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?
how to differentiate a mpcb,mcb with a contactor? Explain their working operation
what is the current setting for different relay protection for transformer .
Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?
Which is the largest hydropower station in the world?
What is the Surge suppresor? Why using in a UDB's and How it works?
Define what is the function of anti-pumping in circuit breaker?
How to select transmission line type (i.e. 11kv or 33kv) for new established industries
how to store the thunder power?
Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station
What are the two major types of control system?
what is class of SPD and dittels of all class ?
i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance
