Answer / selvam567

To make easy path to current while any short circuit
occured between phase to metal body of the equipment.

Note : The resistance is iversely propositional to the
cross section of the conductor.

Answer / virendra joshi

At the time fault multiple time of the fault current is
generated so to give a proper path to the earth the pin
size is bigger in comparision to the other two

Answer / mechsatheesh

in larger size metal body have low resistance.it will allow
the leakage current faster to ground when compared to phase
current to draw inside.

Answer / abhik raj

becz it designed in such a way that line never be shorted
to earth terminal by mistake no one can insert the plug
with out any other combination ...otherwise the neutral
point may be inserted to line which may cause serious
accident..

Answer / praveen kotha

We know that the resistance is inversely proportional to area of cross section.so if area increases resistance decreases,so the leakage current will take low resistance path.that is why earth pin is thicker.
It is longer because the first to make connection and last to disconnect should be earth pin,this will assure safety for the person who uses the electrical instrument.

Answer / akem gilbert

The reason is simply to ensure that the ground connection is the first to make when plug is inserted and the last to be broken when the plug is removed.

Answer / k.prakashchandra

You can insert the top in one way only ,so that the phase
and neutral wires are not interchanged and also because the
earth fault current could be higher than the load current

Answer / pandu

some times the variation in supply voltage the load takes
high current to overcome this problem the earth terminal is
placed

Motor running trough VFD, if voltage reduced speed will be?

4 Answers  

Q: How to calculate Transformer losses , tell us by Formula.

0 Answers  

differentiate between remote backup relay and local backup relay?

1 Answers  

i am BSEE student, my project study is to synchronize the generator of an hospital, it have a one 313KVA standby-power diesel gen.,and three 100kva transformer.The generator system is operated manually and no ATS or UPS. one more new building is being build so the transformer will be upgrade to a higher vale. 1)how i can connect the new gen. to the old gen. and to the synchronize panel? 2)what is the new gen. to be buy?(rating, etc.) These is my title: To synchronize the generator system of the ____ Hospital. Anyone have a good title? Thanks.

1 Answers  

How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.

0 Answers  

What is 100% protection of generator? Why 95% protection is used not 100%?

9 Answers   NTPC,

for compensate 315mh inductance ,how many capaciance required?

0 Answers   Mitsubishi,

What is the fault or needs to be done when frequency in ac drives is not changing?

0 Answers  

what is the clearance time circuit breakr?

1 Answers  

Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

0 Answers   Power Plant,

How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

0 Answers  

54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?

0 Answers   Bajaj, TCS,