this post was submitted on 10 May 2025
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Fun fact: You can estimate the voltage by the length of the insulators. My guess is this is around 100kV (2x 3 phase circuits), around the border of transmission and distribution voltages.
You can also estimate the capacity by the number of conductors per phase. This has a pair of lines for each phase, so a fair chunk, but not the 3 or 4 conductors you sometimes see (although maybe you mainly see that on higher transmission voltages.
It will be 128 kV or 345 kV.
The more I look at it I think it might be a 132kV line on a 400kV tower, with the intention to upgrade it some time in the future. I say this because the insulators aren't actually the full length of the spacing from the tower, there's a separator between the tower and the start of the insulator fins. This makes me think they've left room for longer 400kV insulators to be installed.
Saying that though I have no idea, there could have been all sorts of other considerations that led to a configuration like that.