RE: Grounding Problem???

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Yurtle Turtle by way of Terry Fritz <twftesla-at-qwest-dot-net>" <yurtle_t-at-yahoo-dot-com>

My experience has been the same. If I forget to hook
up the ground wire to my secondary, I get lots of
racing sparks. At higher powers, these often result in
my having to recoat the secondary.

http://www.geocities-dot-com/yurtle_t/tesla/burnt_secondary.jpg

Adam

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "terry oxandale by way of Terry
> Fritz <twftesla-at-qwest-dot-net>" <toxandale-at-cei-dot-net>
> 
> To expand on this, my "large" coil would run fine
> with a un-grounded ground
> wire attached (25 feet of 10awg stranded copper wire
> lying on the concrete
> garage floor), just as it would with the other end
> connected to a buried 6'
> grounding rod. BUT, if I disconnect the ground wire
> (grounded or not) at the
> coil end, then the racing sparks were sure to follow
> with any appreciable
> power input.
> 
> (un)Terry
> 
> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Wednesday, January 23, 2002 2:07 PM
> To: tesla-at-pupman-dot-com
> Subject: RE: Grounding Problem???
> 
> 
> Original poster: "Lau, Gary by way of Terry Fritz
> <twftesla-at-qwest-dot-net>"
> <Gary.Lau-at-compaq-dot-com>
> 
> Several list members have reported that they
> accidentally operated their
> coils without the secondary base connected to the RF
> ground, and saw no
> change in performance.  I believe these reports to
> be true and also believe
> that the real consequence is that RF and high
> voltage will be coupled into
> your AC power lines when there is a poor or no
> ground connection.  I see no
> mechanism that would promote racing sparks due to a
> poor ground.
> 
> Gary Lau
> MA, USA
> 
>  -----Original Message-----
> From: 	Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent:	Wednesday, January 23, 2002 10:05 AM
> To:	tesla-at-pupman-dot-com
> Subject:	Grounding Problem???
> 
> Original poster: "Marry Krutsch by way of Terry
> Fritz <twftesla-at-qwest-dot-net>"
> <u236-at-earthlink-dot-net>
> 
> Hi everyone.
> 
> 	I've been doing a bunch of reading, and found that
> most people have
> extensive RF grounds (compared to mine, anyway). 
> The problem with my
> secondary hasn't really gone away, and I have 1/8
> inch of epoxy coating
> on the thing.  I still get racing sparks, and now I
> have arcs (very hot,
> thick) breaking out of the corona ring to the strike
> rail.  Is the
> corona ring actually supposed to contact the
> secondary, or does it sit
> there "suspended", w/o contact.  Anyway, My RF
> ground is 8 Al stakes
> stuck 18 inches into the soil, with 12 gauge solid
> wire connecting
> them.  I then use one strand of solid 12 gauge wire
> to connect to the
> coil, 15 feet away.  I use bend a hook into the
> wire, and connect it to
> the secondary with a nut.  I water the ground before
> firing the coil.
> I've read that bad grounding can cause secondary
> breakdown.  I'd like an
> opinion or two before I spend money on more
> material.
> 
> My posts may not reflect it, but the help I've
> gotten from you guys has
> been a tremendous help.
> 
> Thanks,
> 	Winston K.
> 
> 
> 
> 
> 
> 
> 
> 
> 


=====
Adam Minchey
yurtle_t-at-yahoo-dot-com
http://www.geocities-dot-com/yurtle_t/index.htm

__________________________________________________
Do You Yahoo!?
Great stuff seeking new owners in Yahoo! Auctions! 
http://auctions.yahoo-dot-com