[Tagging] transformers on poles -- ambiguity in documentation?

John Sturdy jcg.sturdy at gmail.com
Mon Oct 17 13:56:58 BST 2011

On http://wiki.openstreetmap.org/wiki/Tag:power%3Dpole/Gallery, there
is an entry that says:

  Typical Finnish 20 kV line (topmost), a transformer and the
resulting 400 V line. The transformer should be tagged as

When you follow the link on the image for that text, the page there

  A two-legged wooden power=pole with a transformer. For the gallery
that helps assessing border cases of power=pole vs. power=tower

So,  should these things get tagged as "pole" or as "sub_station"?

I'm inclined to tag them as "sub_station" as that's more informative,
but should there be something indicating that the substation is not on
the ground, e.g. location=overground?


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