How would we calculate the no of earthing pits required
for motor /panel
- 5 Answers
- 22882 Views
- APGenco, National Engineering Industries, Practical Viva Questions, I also Faced
- E-Mail Answers
Answer Posted / syed rafiudeen
18. The GI conductor sizes shall be as listed below.
(1). HT switchgear, structures, cable trays & fence, rails,
gate and steel column
50 X 6 mm
(2). PCC & MCC EARTH PITS
50 X 6 mm
(3). DB
25 X 6 mm
(4). Motor rated above 55 KW & above
50 X 6 mm
(5). Motor rated above 22 KW & up to 55 KW
40 X 6 mm
(6). Motor rated above 5.5KW & up to 55KW
25 X 6 mm
(7). Motor rated up to 5.5 KW
8 SWG. GI wire
(8). Lighting panels & local panel
25 X 6 mm
(9). Control & relay panel
25 X 6 mm
(10). DG frame, excites
50 X 6 mm
(11). DG & TX’mer neutral
50 X 6 mm cu flat
(12). TX’mer body
50 X 6 mm
(13). Push button station
8 SWG. GI wire
(14). Receptacles & welding outlets
8 SWG. GI wire
(15). Lightning Arrestor
25 X 3 mm copper
(16). PLC & WF panels
25 X 3 mm copper
| Is This Answer Correct ? | 16 Yes | 5 No |
Post New Answer View All Answers
if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?
How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?
How would you relate your key competencies to this position?
i want to model paper for section engg.
11 kv input, 66 kv input advantages
What is the effect of positive feedback on the stability of the systems?
how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?
what happen if drive input fail momentry at 48.5 HZ frequency?
What is stepper motor. What is its uses?
for what purpose the star point is done in ct
what is meaning of 230volts ac 50hzs ac supply is it rms or maximum to getting ac 230v what amount of max voltage they will send
what is the role of transistor in Circuit?
How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?
how many joint can done in HT line and what is life of the joint
Why Neutral Isolation is required?
