Why the transmision line are
11,33,63,132kv?

Answer Posted / nitin goyal

Its not form factor, if it was so then why there are 400KV
or 765 KV lines.
Answer to it is just a coincidence, It all started in 1881
when first hydroelectricity generator was set up in niagara
falls. That generator produced 110V and then onwards it all
started with that
So it is a mere coincidence that there are 11,33,66,132 KV lines

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