Re: Ham electrocuted today in Kansas City!

Needham Joe Thompson <w4cth@...>

Just goes to show how "accurate" all the rest of the reported news
likely is:-).
As an aside, I have many years experience as an Emergency Room
physician and in running ERs. This sad occurrence happens too
often. Aside from commercial occurrences, the usual victims are
either folks installing antennas (including but not limited to Hams)
or sailboat owners. Both have the common fault of trying to move a
long metal pole throught a very visible overhead wire, the existence
of which may even be known. The other scenario is trying to shoot a
wire antenna accross overhead transmission lines. It can't be said
too often to always look up and NEVER decide that you will be able
to avoid the transmission line.

--- In, Lee Besing <lee@...> wrote:

Did you watch the Fox News broadcast? The reporter claimed you
needed a license to install ham radio antennas and it was unknown
they had such a license, but there were many other licenses on the
roof of the house already. :)

At 09:15 PM 7/13/2008, you wrote:

To the members of the W5SC Yahoo group.

This is from the ARRL PR reflector. I hope this adds to the words
caution that Mike and I provided on tower climbing. It is so sad
that this
type of accident still occurs.

Plan for safety and look at the work area for dangers. These can
be burried
power lines, overhead power lines, out of date or inspection
equipment and any trip hazzards. Tripping on a toolbox or having
an eight
foot ladder fall on you can make for a very bad day.

Think safe and be safe my friends!

Paul Guido, N5IUT

From: Larry Staples lstaples@k.....
Date: July 13, 2008 8:19:25 PM CDT
To: Larry's List
Subject: A ham and his son electrocuted?

KC0TIG and his son were electrocuted today while trying to put up







I just saw this one on the news, and had to write a this message
to be
passed on to the ham community, especially the newer hams.


We lost another ham today, and it is a very sad event. The
parties involved,
were installing a Comet FIBERGLASS antenna, that came in contact
with a
single 7620V power line. Now how do I know what the exact voltage
is? I
built and maintained the substation that fed this circuit. I
spent 27 yrears
as a substaion technician for the Board of Public Utilities. I am
still in
this field. So, I feel I have some experience in what I am
passing along.

In a nutshell, the location of the accident was a few blocks from
substation. The wires you see going thru the residential areas
are AT
MINUMUM 7200 volts from each wire to ground, and between any two
of them is
13,800 volts. This is nothing to play with at any time. I have
seen a fault
TOTALLY vaporize 1" copper buss (which is solid). Imagine what it
can do to
a human.

Each wire is fed from what is called a 3 phase line. From there,
it can be
broken off and sent down a property line as a single wire. Those
are called
"laterals" Yes, you will see a device at the break out point, and
this is a
fuse. BUT the caution needs to be conveyed. These fuses are in
the 60-100
amp range. This is at 7200 volts. On top of that, anytime a tree
across a line, or a pole gets hit, there is a circuit on
the "feeder" at the
substaion that AUTOMATICALLY closes the fedder back in, and TRIES
to restore
the power to the area. Some of these "reclosers" can operate 2-5
depending on how they are set. Now from the substaion end, the
device is set for the full fault capabilites of the line. In the
case of
BPU, this can be set at 600 AMPS, and multiples of that value. The
protective devices are set for what is called a "time" or and
"instantaneous" operation. Picture a fast blow fuse and a slow
blow, and you
will understand the difference in the settings. These setting are
multiple of the 600 amp value. So, if there is a direct short,
then it will
not trip until it reaches a value at, oh lets say, 8 times that
value. So we
are looking at 4800 amps. and this is at 7200 volts and lower.
So, it trips,
then it energizes it AGAIN. The possiblity of survival is slim
and none.

Now remember how I said they were installing a FIBERGLASS
antenna? Well
guess what. It is metal inside. Yes, fiberglass does not radiate
as we all
know. Hence the metal. That is what caused the accident. They got
too close
to the line (remember your 'magnetic lines of flux' theory? If
not, look it
up on the web). There is a minimum approach area that MUST be
followed. This
changes for ALL voltages. This distance must NOT be broken. If it
is a
flashover will happen, and it is not pretty. Electricity will
find the
shortest path to ground. In this case it was a couple of men.

Folks, this is nothing to take chances with. In my almost 30 yrs
as a ham,
and 27 yrs in the power utility field, I have seen way too
many "accidents."
Stop, look and if it is close or SEEMS that way- DON'T. Find
another place.
High voltage lines are NOT forgiving. Your life depends on it.
You always
hear "it is the amps not the volts" well I can tell you when you
get at
these levels, who is going to argue what killed the person who
had the
accident. PLEASE ,PLEASE follow the warnings. ANYWHERE close is
too close.

Stay safe, and I hope we can enjoy many more years of hamming.

Thanks Guys,

Chuck Kraly, K0XM

[Non-text portions of this message have been removed]

Lee W. Besing San Antonio, TX
(210)771-7075 voice

Join to automatically receive all group messages.