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On Thu, 03 Sep 2009 23:25:51 +0100, Stephen wrote:
> On 3 Sep 2009 11:54:01 -0400, Jim Henderson <nos### [at] nospam com> wrote:
>
>>On Thu, 03 Sep 2009 09:14:41 +0100, Invisible wrote:
>>
>>> Rain water isn't chemically pure. (Depending on pollution levels.)
>>> Once the pylon gets wet, it's entire surface is covered in a
>>> continuous sheet of water, which also covers all of the cables. So why
>>> don't they short out?
>>
>>Because the bare wire isn't exposed, it's insulated.
>
> Not on this side of the pond, Jim.
Interesting, I hadn't noticed that - but I hadn't really thought to
look. :-)
>>And in order to
>>short out, you have to have a path for electrons to flow. Arguably it
>>would take a pretty strong rainstorm to give the current someplace to go
>>to.
>>
>>
> I think he means jump or track to.
Yeah, but it still would want to go to ground, and the water doesn't
provide a grounding influence that's stronger than staying with the wire.
Jim
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