Date:

Author: Larry Hess

Subject: Re: Power Lines and cows?

Post:

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For years I kept cattle in a pasture where transmission lines ran =
through the center. They were the large, high tower lines that ran =
from the Safe Harbor Power Plant. =20

When it was foggy, drizzly, or the dew point was near 100 %, I noticed =
the cattle would always gather in the center almost exact equal distant =
from the towers, directly under the lines. When it was real foggy; but =
not raining, I could hear the lines "crackle" even from a considerable =
distance away.

The lines ran North - South; but the cattle always faced perpendicular =
to this. sometimes facing East, sometimes facing West.

Incidentally, I once took a fluorescence 48 inch light bulb during a =
foggy condition, and standing directly under the lines, I could get the =
light bulb to flash intermittently, just by holding it upward toward the =
lines..


----- Original Message -----=20
From: chuck britton=20
To: tap-l@lists.ncsu.edu=20
Sent: Tuesday, March 24, 2009 11:15 AM
Subject: Re: [tap-l] Power Lines and cows?


It is rare for anything other than 60 Hz to be used. These come in =
three wires =3D three phases.


A FEW long lines use DC at high voltage.
Don't know if there are two lines or if the ground can carry the =
return.


For a given maximum voltage - DC can deliver more power.
AC to DC is cheap and DC to AC is getting cheaper.




On Mar 24, 2009, at Mar 24(Tue) 10:52 , Doug Johnson wrote:


What frequency are they using for those high tension lines =
anyway?

Anyone know? ...Doug



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For years I kept cattle in a = pasture where=20 transmission
lines ran through the center. They were the large, = high=20
tower lines that ran from the Safe Harbor Power Plant. =



When it was foggy, drizzly, or = the dew point=20 was near 100
%, I noticed the cattle would always gather in the = center=20
almost exact equal distant from the towers, directly under
the=20 lines. When it was real foggy; but not raining, I could
hear the = lines=20 "crackle" even from a considerable distance
away.



The lines ran North - South; but the = cattle always=20 faced
perpendicular to this. sometimes facing East, sometimes =
facing=20 West.



Incidentally, I once took a = fluorescence 48 inch=20 light bulb
during a foggy condition, and standing directly under the =
lines, I=20 could get the light bulb to flash intermittently,
just by holding it = upward=20 toward the lines..







----- Original Message -----

*From:*=20
chuck =
britton <3D"mailto:britton@ncssm.edu">=20


*To:* tap-l@lists.ncsu.edu <3D"mailto:tap-l@lists.ncsu.edu">
*Sent:* Tuesday, March 24, 2009 = 11:15=20 AM
*Subject:* Re: [tap-l] Power = Lines and=20 cows?

It is rare for anything other than 60 Hz to be used. These come
= in three=20 wires =3D three phases.

A FEW long lines use DC at high voltage.
Don't know if there are two lines or if the ground can carry
the=20 return.

For a given maximum voltage - DC can deliver more power.
AC to DC is cheap and DC to AC is getting cheaper.


On Mar 24, 2009, at Mar 24(Tue) 10:52 , Doug Johnson = wrote:

= What=20 frequency are they using for those high
tension lines = anyway?

Anyone know? =20 = ...Doug


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tap-l-owner@lists.ncsu.edu Sat Mar 28 18:26:27 2009

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