RE: Grounding Problem???

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

Original poster: "Stolz, Mark by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mark.Stolz-at-st-systems-dot-com>

I too have burned a secondary when the ground came loose while running.
http://users2.ev1-dot-net/~nmyreality/tesla/flames/index.html

Mark Stolz
Houston, TX

>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
>