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.
>
>
>
>
>
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