The media likes to exaggerate things. Apparently to get more people to
watch their coverage and thus increase their ratings. This seems to be
the name of the game lately.
Just recently they were predicting a major blizzard, with white-out
conditions, high winds, extreme drifting, and more..... They said to
stay off the roads. This was predicted to occur at a certain time.
The end result occurred 6 hours later than their predicted time. It
snowed, and was fairly heavy at times, but no where close to a
"white-out". It was windy and of course there was some drifting as a
result. I happened to be driving home at the time, and had no problem
driving. In the end, it was just a common winter snow storm, with some
wind and drifting. No biggie!
In the past, I have seen REAL Blizzards, as well as "white-outs", and
drifts so high you could not even walk thru them. I still recall getting
trapped on a storm like that, while driving and not only did I have to
park my car and wait over two hours for the storm to lighten, but also
had to turn around and head home, knowing I'd never get to my
destination. Then it took almost 3 hours to drive about 10 miles.
BIG DIFFERENCE !!!
Exaggeration seems to be the name of the game, when it comes to media
coverage these days. Just like last year there was a local house fire.
The news said "it burned to the ground". I saw the house the next day.
The entire house was still standing, roof intact, but noticable charred
siding from all the windows on one side of the house. "Burned to the
Ground" means NOTHING IS LEFT! There was an entire house still standing,
but with serious damage. (Since then, this house has been repaired. It
was resided, new windows, and I suppose the whole interior was gutted
and replaced). Obviously the structure remained sound, or they would
have demolished it....
On Mon, 08 Feb 2016 14:37:09 -0600, firstname.lastname@example.org wrote:
Yes there is a big difference - BUT - they put out warnings on worst
case scenario so people don't end up in the situation you did. You'd
really be upset if they said there was a chance of light drifting snow
with moderate winds (what you got when the heavy storm was forcast)
and you ended up with the full-blown blizzard. It's a case of CYA
On 02/08/2016 03:24 PM, email@example.com wrote:
I used to rely on NOAA for my weather forcasts, but I consistently found
myself planning for rain when it never happened. Nowadays I still check
there (great source of satellite and dopplar imaging), but I find that
the spot predictions from weather underground suit my activities a lot
better, even breaking it down by hour as to when it is going to rain.
On Sun, 07 Feb 2016 09:55:59 -0600, "Dean Hoffman"
You know, I've seen this myself I think, and from the ground, I
thought the cables were different, one for electricity and one to keep
the cable up, like you suggest. But it seems maybe not.
It does keep them from picking up stray signals.
This is not about power lines specifically.
Twisted pair balanced lines use two-phase (antiphase) signals to drive
transformers that have excellent common-mode impedance matching between
"legs" but do not provide assymmetric signals. Since these conductors
path from source to destination, any induced dereference is allowing
the inductance rejection of reactive noise. This leads to twisted,
braided co-jacketed cables when used in symmetric balanced signal
When it comes to power lines, the twisting has NOTHING to do with
signals. The "Arial triplex" or "arial quadriplex"cable is a means of
keeping the wires from flapping against themselves in the wind and
It is "officially" called ACSR - for" Aluminum Cable Steel Reinforced"
Generally one of the cables is bare and acts as the Neutral as well as
the main suspension cable..
Secondary distribution cable is generally all aluminum instead of
steel reinforced - this runs from the transformer or pole to the
electrical service of the building at "user voltage" while the steel
core is primary distribution cable at higher voltage (generally
speaking) In rural applications the steel re-inforced cable is often
used from the transformer at the road in to the central distribution
pole of, for instance, a farm - at "user voltage"
On Sat, 09 Apr 2016 19:07:01 -0400, firstname.lastname@example.org wrote:
They do twist long distance power lines to cut down on radiating power
but it is on the order of about once a mile. Still a fraction of a
wave length at 60 hz. There is a twist on ther 250kv line behind my
house about a quarter of a mile away. I may have a picture but it is
not on my web site so I can't link it right now.
Naw. This is close to what I was talking about.
One of the wires is ground, the other three current carrying. I think
the hot lines are usually at 7200 volts. Each one of those four would be
a twisted pair. Both of the twisted pair have voltage.
Power for a building site would be supplied by a single transformer
taking power from one of those lines. That would be the typical 240/120
city folk see. Three phase for irrigation would have three transformers
usually supplying 480 volts.
Philo and dpb answered my question.
Using Opera's mail client: http://www.opera.com/mail/
On Sat, 09 Apr 2016 20:30:54 -0500, "Dean Hoffman"
7200 volts is medium voltage and would not be used for anything but
the most local distribution. We have 13kv to ground here for the local
distribution and the main trunks going between towns is 48kv or 250kv
The wires on my street
Those wires you see on the big structures out in the country are at
least 48kv and might be closer to a million.
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