In the proposal there is a statement: " it is impossible to check whatever power line is insulated during survey without closely approaching power line" I thought, that the distinction is very easy; insulated cables don't need insulated suspension. Insulated suspension is very easy to see. Or am I wrong?
On Sat, 3 Nov 2018 at 22:31, Warin <61sundow...@gmail.com> wrote: > On 04/11/18 06:45, Paul Allen wrote: > > On Sat, Nov 3, 2018 at 7:34 PM Mateusz Konieczny <matkoni...@tutanota.com> > wrote: > >> Thanks! It was intended to be about insulation. >> > > It now makes a lot more sense. However, the word "isolated" is present > twice in the rationale. > > You probably ought to mention something that was brought up on this list: > that some power > lines have a cladding which is not considered to be an electrical > insulator. It is unlikely most > mappers could tell the difference. > > Yes, there are insulated cables. They're present on minor power lines for > local distribution (they > run along streets with feeds to houses along the street) near me. At some > points the line > between poles is a single insulated cable and at other points along the > same street it switches > to four, physically-separated, uninsulated conductors. It appears to me > that the uninsulated > stretches are older than the insulated ones and that as repairs become > necessary they change > to insulated cable. I suspect that on anything other than this type of > local distribution any covering > around the wire is cladding rather than insulation. > > > This may be true for local low voltage distribution in your area. > > In my residential area low voltage distribution runs insulated from the > power pole to the residences, but uninsulated from power pole to power > pole. > > ----------------- > High voltage (10s if not 100s of kilo volts) run uninsulated here and I'd > think that would be true anywhere. > > > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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