In power point wiring,often,we use less size of earth wire compared to phase &a

In power point wiring,often,we use less size of earth wire
compared to phase & neutral wire and we use big size pin in
pug top. how is it justified? can we use small size cable
for earthing?

Question Posted / sreenu

3 Answers
7547 Views
HAL, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

In power point wiring,often,we use less size of earth wire compared to phase & neutral wire and..

Answer / santosh kawade

We use big size pin and socket for power point to reduce
resistance in earth pat and to alway connect earthing first
to equipment before connecting mains and neutal in system.

Using low size cable for earthing in single phase can not
be justified, we have to use same size cable for neutral,
eathing and mains.

In three phase we can use lower size cable for earthing and
neutral.

Santosh Kawade
9224 69 3116

Is This Answer Correct ?

8 Yes

3 No

In power point wiring,often,we use less size of earth wire compared to phase & neutral wire and..

Answer / j@ru ( sati)

as we know from R =pl\A bigger the size of area lesser the
resistance of conductor...so b using this concept earth pin
provides less resistance to leakage current compared to
other two pin hence leakage current by pass to earth without
damagng appliances..
thats all thank you

Is This Answer Correct ?

4 Yes

0 No

In power point wiring,often,we use less size of earth wire compared to phase & neutral wire and..

Answer / shanmugam annamalai

The reason of earth point in bigger than that others to
save the equipments from leakage current. It means, the
system will be earthed before connecting to the power
supply. Ultimately, if there is any leakage current, it
would bypassed through earth so equipment will be safe.

Please reply, It you need more clarifications

Is This Answer Correct ?

4 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

why the efficiency of generator is more than the motor in case of swinburne's test????

1 Answers

A jet of fluid strikes a plate What was the force required to counter it?

0 Answers

why are caluculte transformers or dg's in kva does not caluculate in kw

5 Answers

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

0 Answers ABB,

what is a starter ??

2 Answers NPTC,

what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

0 Answers

what is the principle of operation of synchronous motor and generator? explain in detail.

2 Answers Maruti Suzuki,

If a line which is drawing approximatly 2100amps what should be earthing streep size(using galwanize streep)?

2 Answers

what is KWH

2 Answers

what happen if turbine trip ,g.c.b not open and excitation on condition?

1 Answers

what happens when a power transformer neutral earthing broken???

11 Answers MacLellan,

why a tester wont shock while testing the power in house

0 Answers Tessolve,

For more Electrical Engineering Interview Questions Click Here