an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly
Answer Posted / k.prakashchandra
Measure voltage between neutral and phases , it appears that neutral is connected to a phase , being isolated
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the selection process of breakers. Can any one please give a formulation on same?
How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?
what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)
what are the tests comes under the type test, what tests comes under routine tests.
What are the advantages and disadvantages of the ac motors?
Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.
explain transformer ct connection?
How dia computation perfomed in cold rolling mills .
Define peak overshoot.
can we use engine degreaser for electrical motors?
What is the relationship between voltage,current & frequency?
why all the feeders are designed in a particular manner ... is there any reason for that???
what is the calculation formula for motor starting torque,running torque, running torque.
How calculated single phase induction motor req. Capacitor?
dg earth connect only in the amf panel or not why