Answer / parmar jignesh

EARTH POINT PLUG IS BIGGER , BECAUSE AS AREA IS MORE SO
RESISTANCE IS LESS & CURRENT WILL ALWAYS FOLLOW LOW
RESISTANCE PATH I.E WHEN ANY FOULT OR LEAKAGE CURRENT IS
THERE THEN IT WILL FLOW THROUGH EARTH POINT NOT THROUGH
PERSION OPERATING DEVICE, AS EARTH POINT RESISTANCE IS
LOWER THAN THE RESISTANCE OF PERSION OPERATING OPERATING
DEVICE

Answer / minal

we Know that,
Resistance= resistivityx length/area
This means that more the area ,less will be the resistance.
Also, resistance= voltage/current
since the resistance is high, more leakage/fault current
will flow through this big earth point.
Tha tis why, the size of earth hole is bigger than phase
and neutral.

Answer / chetan jain

The size of hole of the earth point in the plug point
bigger than the phase and neutral because , the earth point
is dirctly connected to the body of the electrical
equipment it makes the circuit completed before the phase
and neutral point's are connected, if there is a short
circuit happens it dirctly connects the equipment and
protects man for unwanted shock , or we can also say that
the earth point gives the path to the current to discharge.

Answer / a

during earth fault, high earth leakage current flows through
the earth terminal. so that hole is big

Answer / gtmanikandan

in my point of view
the flow of leakage current depend on the path the
resitance ,if it is resistance is less, cross section of
the conductor high,so we are normally provid less
resistance meterials that why the size of the conductor dnd
hole of the earth point are high

Answer / kk_london

I will give u simple example, the tank containing water
with small tap and the other tank with same capacity of
tank and water with big tap. If we open the taps at the
same time the tank with the bigger tap will drain out first
same logic applies to size of hole of the earth point in
the plug.

Answer / jetho balani

Technically there is no significant reason for having bigger earth point, but psychologically bigger indicate its more importance. As the bodyguard is useful when he is made stronger than the person for whom he is hired to guard, so all are advised not to avoid the use of earth point in order to safeguard yourself

What are the different sign conventions used in electric circuits?

0 Answers  

How much must be gape bitween 2 cable on cable tray?

1 Answers   El Seif,

For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

0 Answers   Hormozgan Steel,

If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

3 Answers   L&T,

what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?

0 Answers  

What are the precautions to be taken before working on a cable?

1 Answers   Alfanar,

sir, how to select the cable size, what is the parameters use ang what is the formulas use for this cable size calculations. please tell me.

4 Answers   ISRO, Power Grid,

What does a permanent magnet generator do?

1 Answers  

What is power relay?

0 Answers  

please mention the minimum IR value for different voltage systems

6 Answers  

A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

1 Answers  

In Panels Main Incomer considered should be TPN or FP?

2 Answers