If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #1739
Joined: Fri Oct 03 2008, 10:05AM
Location: Moscow, Russia
Posts: 261
In fact, a direct lightning hit should it happen that way will rip a concrete block apart as lightning protection tests proved. So I guess that was an indirect hit. Btw this reminds me of an old case when during a match one of the teams started a fulll offense, and the other one had to defend their positions standing still. After a lightning hit something, the step charge did nearly nothing to the defending team, and those in offense were running and got a full feel of that one. As for the probability - of course it is totally random, just the chance to hit a coil is a little bigger ;)
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
LithiumLord wrote ...
A 1m tall TC with a 1m upward spark will be a more likely target then a 2m pole. However keeping in mind the randomness there, the strike probability will be very low anyway, and we are not counting a 2x growth dangerous even if it's 0.2% vs 0.1% (it's way lower in reality) ;) Btw there was an interesting picture around the web a while ago, which was worth the photographer his clean pants - it depicts a lightning bolt and a few nearby leaders, one forming like a couple of meters in front of the guy and being like 1m tall. Talking about statistics ;)
On what basis other than your "gut" feel. Provide the proof or evidence that lightning is more likely to hit the TC in the example above. The burden of proof lies on the one making the claim in this case.
Again, there is nothing magical about a Tesla coil arc that is going to make it a better conductor than a metallic pole. In fact, the impedance of the arc is probably worst than that of similarly sized piece of wire.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Dr. GigaVolt wrote ...
We should all put Tesla Coils on our roofs!
Maybe if it's possible, if we covered a whole area with tesla coils to prevent all possible strikes, eventually there's going to be super lightning (higher charged than regular because it cant strike) and explode a tesla coil!
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
Please don't take my last post as serious !
I just thought this thread needs a conclusion.
I made up the bit about ionized air ..... But the conclusion seems ok;
Since no one has ever reported an operating TC being struck by lightning we can assume that the risk is low.
In practice (to repeat my first post on this topic) lightning is not what we need protection from - RAIN on HV equipment is much more of a concern. So I doubt any of us have run a TC outdoors during a thunder storm !
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
is lightning attracted to a tesla coil?
