why do we need a 4th wire in 3phase 3wire transmission line

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Question Posted / kaushik13031992

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why do we need a 4th wire in 3phase 3wire transmission line..

Answer / dev

that is earth wire

Is This Answer Correct ?

22 Yes

2 No

why do we need a 4th wire in 3phase 3wire transmission line..

Answer / manish2march@gmail.com

some time it needs to protect the transmission line from
lightning .so 4 wire is preffered as ground wire....

Is This Answer Correct ?

5 Yes

0 No

why do we need a 4th wire in 3phase 3wire transmission line..

Answer / n rajesh

One is Red
second is yellow
third is blue
fourth is green for earth.

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2 Yes

0 No

why do we need a 4th wire in 3phase 3wire transmission line..

Answer / sudhir singh

Fourth wire
needed in line
is of GI
provided for
earthing purpose
in case of any
fault occuring
in line we can
call it earth
conductor

Is This Answer Correct ?

1 Yes

0 No

why do we need a 4th wire in 3phase 3wire transmission line..

Answer / ashok mishra

4th wire is GI earthed wire

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1 Yes

0 No

why do we need a 4th wire in 3phase 3wire transmission line..

Answer / b.janardhana rao

4th wire we can use earth wire at the same time it can protects from lightning.

Is This Answer Correct ?

0 Yes

0 No

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