How would we calculate the no of earthing pits required
for motor /panel
- 5 Answers
- 22922 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
how can decide the current rating of oltc
How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend
Pl. share your experience about industrial-electronics repair of machine tool.
what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:
Is potential difference materials property ..? if yes tnen how.. explain brifly.
reason of diode failure in alternator
ROC converges if poles and zeros lie inside a. Origion b. Z=1
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
why do we have spikes enough to burn electronic boards, when generators are not grounded
at which voltage level arcing ground is occurs ??????????
which book to refer in electrical engineering for iocl exam & which book for general english.
We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.
Define stepper motor. What is the use of stepper motor?
why we used ZNO in Lightning arrester.
how to calculate the earth fault current
