we have one ups its neutral is not earthed.its one distribution MCB has a eart

we have one ups its neutral is not earthed.its one
distribution MCB has a earth fault.but we can not put off
any MCB.so how to find out that in which circuit is earthed
without isolating the breaker.

Question Posted / guest

3 Answers
7303 Views
CFCL, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can n..

Answer / dudeblore

By using a megger meter you an find out the faulty circuit.
The faulty circuit will have a less resistance as it has
connected to earth somewhere.

Is This Answer Correct ?

4 Yes

2 No

we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can n..

Answer / guest

measure+ve to earth the earthed mcb will show low voltage
than other mcbs

Is This Answer Correct ?

2 Yes

1 No

we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can n..

Answer / sumitgarg

to aviode that probelem in furure you can use a ELCB or
RCCB that will help to find and earth the earth fault
current.
that shoud be of 1 Amp. rating.

Is This Answer Correct ?

0 Yes

3 No

Post New Answer

More Electrical Engineering Interview Questions

what do you mean by mf of energy meter & its formula?

4 Answers

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 Answers DRDO,

why Copper loss is represented as I square R ?

5 Answers L&T,

What are the different losses In a de mac1une'! t.xplam

0 Answers

what will happen if synchronous machine rotor fed from single phase ac supply

0 Answers

how is working bearing heater?

0 Answers ONGC,

Need help. 3 phase system. Neutral line arced and melted upon connection of connector with 3 phase power. Why would that happen?

4 Answers

why air handling unit interloking in case of fire

3 Answers

when we catch any one of the phases with our both hands in air(without touching ground),our body acts as a conductor.is it correct.please clarrify it.

4 Answers

how to calculate Amp, 2 different Amp of batteries? Example: No. of Batteries = 2 Battery voltage = 12V 1st Battery rating = 17AH 2nd battery rating = 30AH between parallel connection then output volt 12v Amp?

2 Answers Bhel, LG Soft,

transformer is working or not with supply of DC?

2 Answers

what is transformer?

4 Answers Mphasis,

For more Electrical Engineering Interview Questions Click Here