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why some transmission lines have 7 wires n why some have 3 n 4??

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why some transmission lines have 7 wires n why some have 3 n 4??..

Answer / prasu2880

For D/C(Double Circuit) Line having 6 phases & one Earthing
but S/C(single Circuit) line having 3 Phases & on Earthing

Is This Answer Correct ?    15 Yes 4 No

why some transmission lines have 7 wires n why some have 3 n 4??..

Answer / surya

FOR SINGE CIRCUIT LINE 3 CONDUCTORS AND 1 NEUTRAL WIRE USED.
FOR DOUBLE CIRCUIT LINE 6 CONDUCTORS AND 1 EARTH WIRE USED.
BASICALL FOR DISTRIBUTION PURPOSE SINGLE CIRCUIT LINE AND
FOR TRANSMISSION PURPOSE DOUBLE CIRCUIT LINE USED.

Is This Answer Correct ?    12 Yes 3 No

why some transmission lines have 7 wires n why some have 3 n 4??..

Answer / sanjay jangra

question is about transmission line.

If a 220 or 400kV line is having single circuit. Then there
will be 4 or 5 wires. 3 wires for phases and 1 or 2 ground
wires depending upon the tower structure.

Is This Answer Correct ?    3 Yes 3 No

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