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Next: More bad news for The Chosen One?
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External
Since: Jan 24, 2006
Posts: 2743
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(Msg. 31) Posted: Thu Aug 21, 2008 8:12 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: rec>boats (more info?)
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<ohara5.0 DeleteThis @mindspring.com> wrote in message
news:1ead66db-516d-4257-b667-5e51072f79df@d1g2000hsg.googlegroups.com...
> On Aug 21, 7:45 pm, "Eisboch" <r... DeleteThis @nowhere.com> wrote:
>> "Vic Smith" <thismailautodele... DeleteThis @comcast.net> wrote in message
>>
>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>
>>
>>
>> > That isn't a school of thought in the scientific community.
>> > It's been pretty well debunked, but will live on, like Bigfoot.
>> > We could argue about it, but I have the feeling it would be endless no
>> > matter how many cites I come up with.
>> > Of course I'm not a scientist, but can google like crazy.
>> > If you have NFPA approved lightning protection the addition
>> > of devices of "the other school" will do no harm.
>> > But IMO the "other school" alone is Voodoo - and dangerous.
>> > The danger part is why I feel compelled to answer your post.
>>
>> > --Vic
>>
>> Hey, I never said it worked.
>>
>> Eisboch (in his best Harry impersonation)
>
> Every effin day in summer we have lightning shutting stuff down here.
> I come in after lunch and power surges have shut down both electron
> microscopes. At home during a storm I was sitting 4' from my computer
> and a huge spark jumped from the cable modem to the power outlet, the
> computer survived. Last week it was my well getting fried by
> lightning. I use cordless phones cuz I am terrified of a strike to
> the phone lines (another neighbor had that happen to him).
Lightning storms scare the bananas out of me.
Eisboch |
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External
Since: Mar 09, 2008
Posts: 583
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(Msg. 32) Posted: Thu Aug 21, 2008 8:13 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Thu, 21 Aug 2008 10:09:55 -0400, "Eisboch" <rce RemoveThis @nowhere.com> wrote:
>
>"Richard Casady" <richardcasady RemoveThis @earthlink.net> wrote in message
>news:48bf6d66.415281265@news.east.earthlink.net...
>
>>
>> You evidently think a lightning rod will somehow increase the danger,
>> but such has been proven by long experience not to be the case. BS in
>> other words. The lightning rod doesn't know or care what is under it.
>> It prevents strikes in a 90 degree cone under it. Works equally well
>> for buildings, boats, and powerlines.
>
>I think we are talking two different concepts here.
>
>A lightning rod is designed to be "the" point of strike, should one occur
>and equipped with sufficiently sized conductors to discharge the strike to
>ground.
>.
>I am talking about making the building, boat, or whatever less favorable to
>the strike.
>
>It has to do with the positive column .... based on the static charge that
>builds on the ground point.
Having some experience with lightning after constructing and using two
hundred foot and one 120 foot radio towers in the back yard, it's not
always height that affects possibilities.
My towers actually took fewer hits over the years than the Beverage I
had running out through the woods for 5,000 feet which was seven feet
off the ground and covered by tree branches.
Also, something that I didn't realise until about ten years ago, the
damage is done not on the air-ground strike but the ground-air return
strike. - there is more power going that way.
I took a trauma course back when I was still active in the vollies and
I was surprized to find that with injuries, it's actually better to be
closer to the actual strike rather than five/ten feet away. |
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External
Since: Mar 11, 2005
Posts: 1234
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(Msg. 33) Posted: Thu Aug 21, 2008 8:37 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Feb 09, 2007
Posts: 526
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(Msg. 34) Posted: Thu Aug 21, 2008 8:55 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Eisboch" <rce DeleteThis @nowhere.com> wrote in message
news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>
> "Vic Smith" <thismailautodeleted DeleteThis @comcast.net> wrote in message
> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>
>>>
>> That isn't a school of thought in the scientific community.
>> It's been pretty well debunked, but will live on, like Bigfoot.
>> We could argue about it, but I have the feeling it would be endless no
>> matter how many cites I come up with.
>> Of course I'm not a scientist, but can google like crazy.
>> If you have NFPA approved lightning protection the addition
>> of devices of "the other school" will do no harm.
>> But IMO the "other school" alone is Voodoo - and dangerous.
>> The danger part is why I feel compelled to answer your post.
>>
>> --Vic
>
>
> I am not a scientist either, but have an interest in this kind of stuff.
> From what I can tell, the operational theory of a "Lightning Dissipater"
> has never been scientifically proved .... or disproved.
> So, the controversy continues.
>
> However, those that believe it works are in good company.
> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
> about electricity.
> Ol' Ben Franklin even muttered about it.
>
> Eisboch
The University of Florida is recognized as leading, if not the leading,
institution for the study of lightning. The following link may be of
interest to you guys here if you haven't come across it before.
http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/ >> Stay informed about: Lightning |
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External
Since: Jul 11, 2007
Posts: 220
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(Msg. 35) Posted: Thu Aug 21, 2008 9:37 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Thu, 21 Aug 2008 12:48:27 -0400, gfretwell.DeleteThis@aol.com wrote:
>On Thu, 21 Aug 2008 13:58:54 GMT, richardcasady.DeleteThis@earthlink.net (Richard
>Casady) wrote:
>
>>>I am always curious about how a boat takes a hit but I do have some
>>>experience with a lightning rod. I put a 3' copper rod over my weather
>>>station with a pointy stainless steel tip, connected to 2ga copper
>>>wire and terminated in a ground rod (connected to my extensive house
>>>grounding system)
>>>It has been hit twice that I know of and I was about 30' away during
>>>one of them. A mexican laborer was pretty much under it, plastered
>>>against my garage door. Other than the poop reflex we were totally
>>>unaffected.. The steel garage door he was plastered to is bonded to
>>>the same grounding system as the lightning rod as is the wet concrete
>>>driveway I was standing on.
>>>We were fine. The weather station ... not so much ... either time.
>>
>>000 wire and a ten foot long grounding rod, is the customary practice
>>with lightning rods.
>
>
>The 2 ga does an excellent job of routing the shot. My ground
>electrode system is a lot more extensive than a single rod. The proof
>is in the pudding as they say. The only thing I have ever lost is the
>serial port in the PC that hooks to the weather station and that is
>because the weather station signal cable runs parallel to the ground
>wire from the air terminal for about 20'.
>I am a bit embarrassed that I did that but I didn't really think this
>thing would attract lightning so well.
>It should be noted that the PC was connected to my network and nothing
>else was affected. In fact I am still typing on the same PC as we
>speak. The only thing that went was the serial port.
>The last time it took a hit the same thing happened. The serial port
>on the lap top it was connected to wasn't even totally fried. It still
>runs a modem, just not the weather station.
>Next time around I am putting the weather station on a fiberglass pole
>on the other corner of the house but I am keeping the air terminal
>where it is.
>If I was using the RF connection from the weather station I bet
>nothing would have been hurt
I was working at my computer when lightning hit 6 feet away. The
screen didn't even flicker. All the juice stayed with the 000 wire.
Casady >> Stay informed about: Lightning |
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External
Since: Jan 24, 2006
Posts: 2743
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(Msg. 36) Posted: Thu Aug 21, 2008 9:37 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Richard Casady" <richardcasady RemoveThis @earthlink.net> wrote in message
news:48b3e014.5115390@news.east.earthlink.net...
>
> I was working at my computer when lightning hit 6 feet away. The
> screen didn't even flicker. All the juice stayed with the 000 wire.
>
> Casady
If you could instantaneously block the vivid light of a lightning strike,
you would see a large area surrounding it, the diameter of which is
dependent on the voltage, of ionized atmosphere around the primary strike
point. It also is conducting, although at a much lower amperage compared
to the main current path.
You just don't see it because the primary flash of light is so bright.
Eisboch >> Stay informed about: Lightning |
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External
Since: Mar 11, 2005
Posts: 1234
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(Msg. 37) Posted: Thu Aug 21, 2008 9:37 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Jan 26, 2006
Posts: 2304
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(Msg. 38) Posted: Thu Aug 21, 2008 10:39 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Eisboch" <rce DeleteThis @nowhere.com> wrote in message
news:OuidndxuvJX2mTPVnZ2dnUVZ_u2dnZ2d@giganews.com...
>
> <ohara5.0 DeleteThis @mindspring.com> wrote in message
> news:1ead66db-516d-4257-b667-5e51072f79df@d1g2000hsg.googlegroups.com...
>> On Aug 21, 7:45 pm, "Eisboch" <r... DeleteThis @nowhere.com> wrote:
>>> "Vic Smith" <thismailautodele... DeleteThis @comcast.net> wrote in message
>>>
>>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>>
>>>
>>>
>>> > That isn't a school of thought in the scientific community.
>>> > It's been pretty well debunked, but will live on, like Bigfoot.
>>> > We could argue about it, but I have the feeling it would be endless no
>>> > matter how many cites I come up with.
>>> > Of course I'm not a scientist, but can google like crazy.
>>> > If you have NFPA approved lightning protection the addition
>>> > of devices of "the other school" will do no harm.
>>> > But IMO the "other school" alone is Voodoo - and dangerous.
>>> > The danger part is why I feel compelled to answer your post.
>>>
>>> > --Vic
>>>
>>> Hey, I never said it worked.
>>>
>>> Eisboch (in his best Harry impersonation)
>>
>> Every effin day in summer we have lightning shutting stuff down here.
>> I come in after lunch and power surges have shut down both electron
>> microscopes. At home during a storm I was sitting 4' from my computer
>> and a huge spark jumped from the cable modem to the power outlet, the
>> computer survived. Last week it was my well getting fried by
>> lightning. I use cordless phones cuz I am terrified of a strike to
>> the phone lines (another neighbor had that happen to him).
>
>
> Lightning storms scare the bananas out of me.
>
> Eisboch
>
Buddy worked in a small low power radio station while in college. A rip and
read news report place. TTY in a closet and 5 minutes before the news, go
rip the page off the TTY and read it. Said they had a lightening strike and
the transmitter reset automatically and when they went to rip, opened the
closed door to a melted TTY. Did not plow the 110V fuse and the resistors
on the telephone pad were still intact. Nothing else harmed. >> Stay informed about: Lightning |
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External
Since: Aug 18, 2008
Posts: 7
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(Msg. 39) Posted: Fri Aug 22, 2008 7:21 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Eisboch" <rce.DeleteThis@nowhere.com> wrote in message
news:OuidndxuvJX2mTPVnZ2dnUVZ_u2dnZ2d@giganews.com...
>
> <ohara5.0.DeleteThis@mindspring.com> wrote in message
> news:1ead66db-516d-4257-b667-5e51072f79df@d1g2000hsg.googlegroups.com...
>> On Aug 21, 7:45 pm, "Eisboch" <r....DeleteThis@nowhere.com> wrote:
>>> "Vic Smith" <thismailautodele....DeleteThis@comcast.net> wrote in message
>>>
>>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>>
>>>
>>>
>>> > That isn't a school of thought in the scientific community.
>>> > It's been pretty well debunked, but will live on, like Bigfoot.
>>> > We could argue about it, but I have the feeling it would be endless no
>>> > matter how many cites I come up with.
>>> > Of course I'm not a scientist, but can google like crazy.
>>> > If you have NFPA approved lightning protection the addition
>>> > of devices of "the other school" will do no harm.
>>> > But IMO the "other school" alone is Voodoo - and dangerous.
>>> > The danger part is why I feel compelled to answer your post.
>>>
>>> > --Vic
>>>
>>> Hey, I never said it worked.
>>>
>>> Eisboch (in his best Harry impersonation)
>>
>> Every effin day in summer we have lightning shutting stuff down here.
>> I come in after lunch and power surges have shut down both electron
>> microscopes. At home during a storm I was sitting 4' from my computer
>> and a huge spark jumped from the cable modem to the power outlet, the
>> computer survived. Last week it was my well getting fried by
>> lightning. I use cordless phones cuz I am terrified of a strike to
>> the phone lines (another neighbor had that happen to him).
>
>
> Lightning storms scare the bananas out of me.
>
> Eisboch
>
Sorry. Can't help you right now. Got pineapples though. >> Stay informed about: Lightning |
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External
Since: Feb 09, 2007
Posts: 526
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(Msg. 40) Posted: Fri Aug 22, 2008 8:30 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Eisboch" <rce DeleteThis @nowhere.com> wrote in message
news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>
> "Vic Smith" <thismailautodeleted DeleteThis @comcast.net> wrote in message
> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>
>>>
>> That isn't a school of thought in the scientific community.
>> It's been pretty well debunked, but will live on, like Bigfoot.
>> We could argue about it, but I have the feeling it would be endless no
>> matter how many cites I come up with.
>> Of course I'm not a scientist, but can google like crazy.
>> If you have NFPA approved lightning protection the addition
>> of devices of "the other school" will do no harm.
>> But IMO the "other school" alone is Voodoo - and dangerous.
>> The danger part is why I feel compelled to answer your post.
>>
>> --Vic
>
>
> I am not a scientist either, but have an interest in this kind of stuff.
> From what I can tell, the operational theory of a "Lightning Dissipater"
> has never been scientifically proved .... or disproved.
> So, the controversy continues.
>
> However, those that believe it works are in good company.
> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
> about electricity.
> Ol' Ben Franklin even muttered about it.
>
> Eisboch
The University of Florida is recognized as leading, if not the leading,
institution for the study of lightning. The following link may be of
interest to you guys here if you haven't come across it before.
http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/ >> Stay informed about: Lightning |
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External
Since: Aug 11, 2008
Posts: 170
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(Msg. 41) Posted: Fri Aug 22, 2008 8:36 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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D.Duck wrote:
> "Eisboch" <rce.DeleteThis@nowhere.com> wrote in message
> news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>> "Vic Smith" <thismailautodeleted.DeleteThis@comcast.net> wrote in message
>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>
>>> That isn't a school of thought in the scientific community.
>>> It's been pretty well debunked, but will live on, like Bigfoot.
>>> We could argue about it, but I have the feeling it would be endless no
>>> matter how many cites I come up with.
>>> Of course I'm not a scientist, but can google like crazy.
>>> If you have NFPA approved lightning protection the addition
>>> of devices of "the other school" will do no harm.
>>> But IMO the "other school" alone is Voodoo - and dangerous.
>>> The danger part is why I feel compelled to answer your post.
>>>
>>> --Vic
>>
>> I am not a scientist either, but have an interest in this kind of stuff.
>> From what I can tell, the operational theory of a "Lightning Dissipater"
>> has never been scientifically proved .... or disproved.
>> So, the controversy continues.
>>
>> However, those that believe it works are in good company.
>> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
>> about electricity.
>> Ol' Ben Franklin even muttered about it.
>>
>> Eisboch
>
> The University of Florida is recognized as leading, if not the leading,
> institution for the study of lightning. The following link may be of
> interest to you guys here if you haven't come across it before.
>
> http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/
>
>
Florida is the lighting capital of the US. It would make sense the U of
Fl would study it. >> Stay informed about: Lightning |
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External
Since: Jan 24, 2006
Posts: 2743
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(Msg. 42) Posted: Fri Aug 22, 2008 8:47 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"D.Duck" <Don.TakeThisOut@ld.duck> wrote in message
news:_ZKdncYRK8JnLTPVnZ2dnUVZ_tTinZ2d@giganews.com...
>
> "Eisboch" <rce.TakeThisOut@nowhere.com> wrote in message
> news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>>
>> "Vic Smith" <thismailautodeleted.TakeThisOut@comcast.net> wrote in message
>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>
>>>>
>>> That isn't a school of thought in the scientific community.
>>> It's been pretty well debunked, but will live on, like Bigfoot.
>>> We could argue about it, but I have the feeling it would be endless no
>>> matter how many cites I come up with.
>>> Of course I'm not a scientist, but can google like crazy.
>>> If you have NFPA approved lightning protection the addition
>>> of devices of "the other school" will do no harm.
>>> But IMO the "other school" alone is Voodoo - and dangerous.
>>> The danger part is why I feel compelled to answer your post.
>>>
>>> --Vic
>>
>>
>> I am not a scientist either, but have an interest in this kind of stuff.
>> From what I can tell, the operational theory of a "Lightning Dissipater"
>> has never been scientifically proved .... or disproved.
>> So, the controversy continues.
>>
>> However, those that believe it works are in good company.
>> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
>> about electricity.
>> Ol' Ben Franklin even muttered about it.
>>
>> Eisboch
>
> The University of Florida is recognized as leading, if not the leading,
> institution for the study of lightning. The following link may be of
> interest to you guys here if you haven't come across it before.
>
> http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/
>
Yup, more acknowledgement that we really don't 100% understand lightning.
BTW, I am curious. Did you just resend this post? It arrived on my
computer marked 8/22/2008 at 8:30 am or 15 min ago.
Yet, I seem to recall read the same post yesterday.
With all the goofy stuff going on lately with the servers, I was just
wondering.
Eisboch >> Stay informed about: Lightning |
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External
Since: Feb 09, 2007
Posts: 526
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(Msg. 43) Posted: Fri Aug 22, 2008 8:51 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Earl of Warwich, Duke of Cornwall, Marquies of Anglesea, Sir Reginald P.
Smithers III Esq. LLC, STP. " <nospamplease DeleteThis @here.com> wrote in message
news:HfCdnT_Kg4NKLzPVnZ2dnUVZ_srinZ2d@comcast.com...
> D.Duck wrote:
>> "Eisboch" <rce DeleteThis @nowhere.com> wrote in message
>> news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>>> "Vic Smith" <thismailautodeleted DeleteThis @comcast.net> wrote in message
>>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>>
>>>> That isn't a school of thought in the scientific community.
>>>> It's been pretty well debunked, but will live on, like Bigfoot.
>>>> We could argue about it, but I have the feeling it would be endless no
>>>> matter how many cites I come up with.
>>>> Of course I'm not a scientist, but can google like crazy.
>>>> If you have NFPA approved lightning protection the addition
>>>> of devices of "the other school" will do no harm.
>>>> But IMO the "other school" alone is Voodoo - and dangerous.
>>>> The danger part is why I feel compelled to answer your post.
>>>>
>>>> --Vic
>>>
>>> I am not a scientist either, but have an interest in this kind of stuff.
>>> From what I can tell, the operational theory of a "Lightning Dissipater"
>>> has never been scientifically proved .... or disproved.
>>> So, the controversy continues.
>>>
>>> However, those that believe it works are in good company.
>>> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
>>> about electricity.
>>> Ol' Ben Franklin even muttered about it.
>>>
>>> Eisboch
>>
>> The University of Florida is recognized as leading, if not the leading,
>> institution for the study of lightning. The following link may be of
>> interest to you guys here if you haven't come across it before.
>>
>> http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/
> Florida is the lighting capital of the US. It would make sense the U of
> Fl would study it.
Roger that. I live 50 miles from the UF and have seen some of their open
field test setups where they catch lightning in a bottle. >> Stay informed about: Lightning |
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External
Since: Feb 09, 2007
Posts: 526
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(Msg. 44) Posted: Fri Aug 22, 2008 8:53 am
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Eisboch" <rce.TakeThisOut@nowhere.com> wrote in message
news:kYKdna3esd_oKDPVnZ2dnUVZ_i2dnZ2d@giganews.com...
>
> "D.Duck" <Don.TakeThisOut@ld.duck> wrote in message
> news:_ZKdncYRK8JnLTPVnZ2dnUVZ_tTinZ2d@giganews.com...
>>
>> "Eisboch" <rce.TakeThisOut@nowhere.com> wrote in message
>> news:04WdnTCOkrDYnjPVnZ2dnUVZ_orinZ2d@giganews.com...
>>>
>>> "Vic Smith" <thismailautodeleted.TakeThisOut@comcast.net> wrote in message
>>> news:dnura4plcmml99ngdgpdi73r32o7ep9pkf@4ax.com...
>>>
>>>>>
>>>> That isn't a school of thought in the scientific community.
>>>> It's been pretty well debunked, but will live on, like Bigfoot.
>>>> We could argue about it, but I have the feeling it would be endless no
>>>> matter how many cites I come up with.
>>>> Of course I'm not a scientist, but can google like crazy.
>>>> If you have NFPA approved lightning protection the addition
>>>> of devices of "the other school" will do no harm.
>>>> But IMO the "other school" alone is Voodoo - and dangerous.
>>>> The danger part is why I feel compelled to answer your post.
>>>>
>>>> --Vic
>>>
>>>
>>> I am not a scientist either, but have an interest in this kind of stuff.
>>> From what I can tell, the operational theory of a "Lightning Dissipater"
>>> has never been scientifically proved .... or disproved.
>>> So, the controversy continues.
>>>
>>> However, those that believe it works are in good company.
>>> Nicola Tesla patented it in 1918. He is rumored to know a thing or two
>>> about electricity.
>>> Ol' Ben Franklin even muttered about it.
>>>
>>> Eisboch
>>
>> The University of Florida is recognized as leading, if not the leading,
>> institution for the study of lightning. The following link may be of
>> interest to you guys here if you haven't come across it before.
>>
>> http://www.powerandmotoryacht.com/columns/electronicsc/0503electronics/
>>
>
> Yup, more acknowledgement that we really don't 100% understand lightning.
>
> BTW, I am curious. Did you just resend this post? It arrived on my
> computer marked 8/22/2008 at 8:30 am or 15 min ago.
> Yet, I seem to recall read the same post yesterday.
>
> With all the goofy stuff going on lately with the servers, I was just
> wondering.
>
> Eisboch
Yes, the double post was a glitch on my part. I saw the message still in my
Outbox this morning and when trying to clear it, it was sent a second time. >> Stay informed about: Lightning |
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External
Since: Jul 11, 2007
Posts: 220
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(Msg. 45) Posted: Fri Aug 22, 2008 12:55 pm
Post subject: Re: Lightning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Thu, 21 Aug 2008 13:00:35 -0400, gfretwell RemoveThis @aol.com wrote:
>On Thu, 21 Aug 2008 15:24:48 GMT, richardcasady RemoveThis @earthlink.net (Richard
>Casady) wrote:
>
>> Every powerline has lightning protection, a
>>grounded wire above the power conductors. What does every electric
>>utility know? None the less lightning does hit powerlines. A long wire
>>lacks sharp points, if that makes a lot of difference.
>
>
>That is certainly not true in Florida. The top wire on the MV
>distribution poles around here is the medium voltage wire. The
>grounded conductor is on the bottom. (actually the top of the
>secondary triplex here.)
>
>
>http://esteroriverheights.com/electrical/transformer_feeding_a_120-240_bus.jpg
>
>On the HV transmission lines they do put the ground on top tho.
>
>This is 250KV and the ground is on top
>http://members.aol.com/gfretwell/powerline.jpg
>
My mistake. I went for a country drive. The HV lines around here are
on two kinds of CorTen steel tower, galvanized ones, and wood,and
there are many of them. [Des Moines, Iowa] Indeed they have a grounded
wire above the energized ones. They would need lightning protection
more than the 22KV ones in front of the house. [The ones with the fist
size insulators, not the yard long ones.]
Casady >> Stay informed about: Lightning |
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