Re: Liquid properties

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

 > >         It is common practice to wash the insulators on HC power lines 
using
 > >water and a hose on a tall pole.  Apparently the resistivity of the
 > >moving stream is high enough that it doesn't fry the equipment at the
 > >nozzle end of the spray.  It would probably be fairly easy to spray
 > >water into the INSIDE of the pipes to cool them, if you could figure a
 > >way to keep it out of the gap region and give it a place to accumulate
 > >so it didn't short out any of the sections.  Worthwhile????????
 >
 > Actually, the power line washing machine is cleverer than that.  The stream
 > of water in the nozzle is interrupted into short bits, so there's no
 > continous stream to the ground.  Somewhere on the web, there's a photo of
 > what happens to one of those trucks when the interrupting mechanism fails.

	Interesting and I hadn't realized that.  I've seen them working from
pretty close but guess I wasn't looking for the right thing.  If you
ever figure where you saw the picture I'd sure like to see it.  Forget
my great idea!

Ed