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    <div class="moz-cite-prefix">On 09-Mar-17 03:19 AM, François Lacombe
      wrote:<br>
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cite="mid:CAG0ygLcZ+nwQSnmAJAkqdxqZd7JjNqtw9c+Rtjk+xQ5DBtOKMQ@mail.gmail.com"
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      <div dir="ltr">Hi Tom,<br>
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            <div class="gmail_quote">2017-03-08 16:08 GMT+01:00 Tom
              Pfeifer <span dir="ltr"><<a moz-do-not-send="true"
                  target="_blank" href="mailto:t.pfeifer@computer.org">t.pfeifer@computer.org</a>></span>:<br>
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                  class="gmail-"><br>
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                The wiki documents for what particular tags are for.
                This tag is used 826577 times, so this documentation is
                essential.<br>
                <br>
                Also, we normally do not delete wiki pages at all. The
                process would be to discourage or deprecate the tag,
                however the reasons you gave above are very weak for me.<br>
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              <div>My point wasn't to delete any page but to remove
                frequency=* as a possible tag for power lines.<br>
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                <br>
                frequency=16.7 is used a lot on railway networks where
                it is clearly distinguished from the 50 (Europe) or 60
                (America) Hz regular energy distribution.<br>
                <br>
                frequency=0 (used on 35% of the tags) means DC power
                which is used on specific railways, and could also apply
                to DC distribution networks that I vaguely remember are
                constructed differently from traditional
                50/60Hz-Networks.<br>
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              <div>I didn't say frequency isn't used but it is actually
                misused.<br>
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              <div>Frequency refers to power routes, not physical power
                lines<br>
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    <br>
    While the lines themselves don't have a frequency (well there are
    limits as to what they will take) themselves, as you say the
    supporting infrastructure (transformers, generators etc) have a
    nominal frequency. <br>
    <br>
    If you want include a statement that power distribution lines
    themselves do not require a tag of frequency but relationships that
    have those lines as members should have a tag of frequency? <br>
    Is that what you are after? Do remember that the wiki is a guide,
    not rules... try not to be pedantic. <br>
    <br>
    <blockquote
cite="mid:CAG0ygLcZ+nwQSnmAJAkqdxqZd7JjNqtw9c+Rtjk+xQ5DBtOKMQ@mail.gmail.com"
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              <div><br>
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              <div>Example :<br>
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              <div>A 400 kV 50Hz route : <a moz-do-not-send="true"
                  href="http://www.openstreetmap.org/relation/6359644">http://www.openstreetmap.org/relation/6359644</a><br>
              </div>
              <div>Which has lines as members : <a
                  moz-do-not-send="true"
                  href="http://www.openstreetmap.org/way/41773490">http://www.openstreetmap.org/way/41773490</a>
                <a moz-do-not-send="true"
                  href="http://www.openstreetmap.org/way/41828020">http://www.openstreetmap.org/way/41828020</a>
                where frequency isn't mentioned.<br>
                <br>
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              <div>If a 16.7 Hz line would have shared same sections,
                the relation would have frequency=16.7 and line sections
                wouldn't.<br>
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