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 #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
I like very much grounding my Tesla coil on the earth of the net. It is a very common coil, with a neon transformer with one side of the 5KV, 30 mA on earth. Can I risk that without any danger?
Sorry for the language, my Dutch is better than my English!
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Do you mean Earth GND from your power outlet? For a 5kV, 30mA you are probably okay using the earth ground from the outlet. However, anytime you hook up a Tesla coil to your outlet ground, there is always risk.
Registered Member #639
Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
A filter isn't going to reduce the danger by much. The main problem with using mains ground is the long length of wire going trough your house. This will work as an antenna and give lots of interference that might damage other devices. The smaller the coil the less interference.
I'd go with a proper RF ground in your garden, way less risk. And you'll eventually need it when you want bigger coils. and Trust me you will want to build bigger.
Ps I'm Dutch too so if you want to ask anything in Dutch do so via a PM
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
So it is impossible to demonstrate a Tesla coil in a safe way in different buildings just using the ground from the main outlet? Even with that small power (150 Watt).
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
I run 2 coils (1200VA each) on the same circuit and house GND all the time in my garage, you just have to be careful that you don't have any sensitive electronics on the same circuit (computers, TVs, radios, garage door openers, etc...)
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Patric wrote ...
So it is impossible to demonstrate a Tesla coil in a safe way in different buildings just using the ground from the main outlet? Even with that small power (150 Watt).
If you are running a very small coil, the risk is minimal if running of mains ground. I had a small portable 4kV,38mA coil at one time that i plugged in practically everywhere including sharing the same power outlet strip that computers were plugged into.
Can you still damage equipment? Sure, there is always a slight risk. But for something low powered like that, the risk is very small.
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
EastVoltResearch wrote ...
Patric wrote ...
So it is impossible to demonstrate a Tesla coil in a safe way in different buildings just using the ground from the main outlet? Even with that small power (150 Watt).
If you are running a very small coil, the risk is minimal if running of mains ground. I had a small portable 4kV,38mA coil at one time that i plugged in practically everywhere including sharing the same power outlet strip that computers were plugged into.
Can you still damage equipment? Sure, there is always a slight risk. But for something low powered like that, the risk is very small.
Thank you, now I am more confident... Next week first experiment! I'll be back (if my wife don't kill me)!
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.
Quick question about earth
