Re: [Phys-l] Glaze Ice

[Roger Haar <haar@physics.arizona.edu>]

Hi,

	I know of a case the the underground conduit to the house 
was damaged during the backfill process.  A number of years 
later the common (from the transformer's center tap) 
developed a fair amount of resistance.  This created odd 
happenings in the house, like unusually dim lights, unless 
other lights were on.

	When the home owner described the lights to me, I suggested 
he call an electrician immediately.  The electrician found 
it was on the electric companies wires.  They came out in 
the evening and made an immediate temporary fix.  They were 
concerned about equipment ( for example, a refrigerator) 
damage from low voltage.

Thanks
 Roger Haar

	

Bernard Cleyet wrote:
> That describes what I remember when some workers were splicing in for a house.  Now I suppose they have a substitute for the lead.
>
> bc
>
>
> On 2010, Feb 03, , at 06:21, chuck britton wrote:
>
> > I actually saw a lead jacketed, gutta percha wrapped line explode in 
> > Florida back in the '70's.
> > As the lines were replaced we salvaged a lot of the lead for cryostat 
> > air-leg masses.
> >
> > At 8:22 PM -0600 2/2/10, Hodges, Laurent [PHYSA] wrote:
> > > ________________________________________
> > >
> > >
> > > In all fairness, underground power has had serious problems with
> > > ground water leakage up until the late '90's or so when PVC conduit
> > > began being used.
> > >
> > >
> > > Well, I wondered about that at the time (circa 1980), but there has 
> > > never been a problem despite lots of freezing and thawing of our 
> > > ground, really wet times, etc.
> > > _______________________________________________
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