2013/1/25 Friedrich Volkmann <b...@volki.at> > > power=station is used for large, fenced areas where high voltage is > transformed to medium voltage. In German: Umspannwerk > > power=sub_station is used for smaller objects, like buildings with 2m each > side and a height of a few m, where medium voltage is transformed to low > voltage. In German: Trafohäuschen (or Trafostation)
Problem with this is that you have to define the exact area that delimits a big from a small substation, and the exact voltage. What about stations that are big in area, but low in voltage? And vice-versa? Anyway, area is obvious from the polygon you have drawn, and the exact voltage can be written in the voltage=* tag. There is really no reason, except the historic one, to categorize power substations with those tags. P.S. In the wiki under the part about voltage=* it says: The highest voltage of operation within the facility. Wouldn't it be better to enumerate all voltages that are in use in that station? Something like voltage=110;35;10 Janko Mihelić
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
