Tag:power=minor_line

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Public-images-osm logo.svg power = minor_line
Minor.jpg
Description
Lines forming the distribution grid (100-120/220-240 to about 45 kV), usually carried by single poles.
Group: Power
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasuse on relations unspecified
Useful combination
See also
Wikidata
Status: in use

Uninsulated power lines carried on poles physically smaller than the high voltage pylons/towers and used for power distribution, are tagged as power=minor_line. Mostly supported on single poles, although sometimes the poles can have several supporting beams. High voltage electricity cables used for bulk transmission are tagged with power=line.

Minor lines may be anything providing power distribution, from interconnected 20,000 volt lines powering a small suburb, to a single cable running from a street lighting pole to the next one. Be careful not to mistake aerial telephone cables (or the like) for power lines.

This tag will apply mostly on the lines that form the distribution grid, which uses voltages between the 100-120 or 220-240 volt utilization voltages and 45,000 volts (45 kV), or the highest known standard distribution voltage used in the country or region. In some areas, distribution may be provided by two primary voltage levels (e.g. 6.6 and 34.5 kV, 11 and 33 kV), with the lower one typically serving smaller customers and the higher one serving larger ones (given their capacities). Lines are usually unbundled, but with the exception of aerial lines using insulated wire and carrying the utilization voltage for the end customers , they may be bundled, but it is rather one whole three-phase circuit (plus neutral) bundled together in order to cross an obstruction (e.g. crossing with a high voltage transmission line), where safety will be a concern if an unbundled line will pass too close, or there is a space constraint to place another cross-arm to an existing pole.

How to Map

Draw a Way way following the path of the cables, adding a node at the location of poles. You can, additionally, then give each of those nodes the tag power=pole. It is not necessary to tag power lines with a layer=* unless two lines cross over each other.

Tagging

When known, you can also add at least these tags to further define the line:

  • voltage=* Nominal voltage (in Volts), for example 20000 or 400
  • cables=* Number of the cables carrying currect; Likely values are 1/3/6. The possible lightning protection / shield wire higher than the other cables is not included.
  • ref=*
  • name=*
  • operator=*

Gallery

Rendering

Mapnik renders these as a light gray line at high zooms. Osmarender uses a dashed line with a higher frequency of dashes than a normal power line, again only at high zooms.

See Also

  • power=line For uninsulated high-voltage power lines supported by towers..
  • power=cable For insulated, underground or sea cables.