In power point wiring,often,we use less size of earth wire
compared to phase & neutral wire and we use big size pin in
pug top. how is it justified? can we use small size cable
for earthing?
- 3 Answers
- 7522 Views
- HAL, I also Faced
- E-Mail Answers
Answer Posted / shanmugam annamalai
The reason of earth point in bigger than that others to
save the equipments from leakage current. It means, the
system will be earthed before connecting to the power
supply. Ultimately, if there is any leakage current, it
would bypassed through earth so equipment will be safe.
Please reply, It you need more clarifications
| Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
What is star-delta transformer?
what is gas turbine intercooling ?
1600kva capacity Transformers how the bucholz relay,Oil temperature,winding,surge relay relays setting are to be done
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?
What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?
wat is d diffr btw shunt coil and trip coil in VCB?
plz tel me syllabus and exam date 4 jr executive engg (electrical)
I Want randstand placement papers
is oil viscosity affect on motor current?
what is the principle of operation of CFL ??
Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?
explain different types of d.c motors?
what are the differant std sizes of cable trenches?
what is the use of Auto re-closer?
how to test YNyn0 vector group in transformer?
