Current flow in or out?

[duke37]

I noticed a new transmission line ,just finished, strung two conductors per insulator. I wonder if that was to achieve longer cable without splicing or a more efficient transmission of electricity.

I have a vague memory that twin conductors on high voltage transmission lines are used to reduce the inductance.

 

[Cannonball]

Go to https://en.wikipedia.org/wiki/Waveguide. It tells a little bit about how waveguides work.