Interested to Buy Any Domain ? << Click Here >> for more details...
I've descovered that when the earth wire in a domestic
electrical installation is not connected back to the board
(ground) a voltage of between 9-24v is is found to be
present in the earth wire.
When connected at the board there is no voltage - is this
normal and why does it happen?
- 3 Answers
- 4850 Views
- I also Faced
- E-Mail Answers
Answer Posted / kj
You will find that no insulation is perfect. There will
always be some leakage. As well there will be induction
into the wire because it is run next to the phase and
neutral. Both of these can account for a voltage in the
earth wire when disconnected.
I would expect a higher reading if the voltage was due to
leakage in the insulation. This could be up to phase
voltage but with no current capacity.
I would think the reading is most likely induction. The
voltage here would increase depanding on the current and
the length that the earth was run with the phase and
neutral.
When it is connected to the earth in the board the voltage
is drained away as in both cases there is only negligible
current capacity.
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
who many types of fire explane with exmple
Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?
Where can i get practical knowledge of solar system?
What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter
Write a note on materials used as a fuse element.
What is measurement?
What is the ratio of true power to apparent power in an ac circuit?
Saving in copper achieved by converting a 2 winding transformer in to an auto transformer is determined by A voltage transformation ratio B load on secondary C quality of core material D size of transformer core
Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..
I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com
I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing
what is the maintaining Cf in UPS.
what is difference between speed mode and torque mode in motor?? explain in simple words please.
