Answer / dev

that is earth wire

Answer / manish2march@gmail.com

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

Answer / n rajesh

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

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

Answer / ashok mishra

4th wire is GI earthed wire

Answer / b.janardhana rao

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

can any one tell me the formula to select the thickness of wire selection according to ampere rating

2 Answers  

A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

0 Answers  

How many 2 ton window A/c can runs on a 125 KVA generator?

2 Answers  

why we test the core balance of the transformer?

1 Answers  

why we avoid parallel operation of diesl generator?

4 Answers  

What is the difference between Earth Fault protection & Neutral Protection

1 Answers  

why air handling unit interloking in case of fire

3 Answers  

lightning current is ac or dc..?????

7 Answers  

Is potential difference materials property ..? if yes tnen how.. explain brifly.

0 Answers  

how does WTI work ?

0 Answers  

can v use earth as nutral. yes than y.if not y.

3 Answers  

hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

0 Answers