Re: Grounding (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 11 Aug 2007 14:04:29 -0400
From: Crispy <crispy@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Grounding (fwd)

Is an actual RF ground necessary for reasonable performance and safety,
or can a counterpoise function adequately?

Thanks,
Chris

On Sat, 2007-08-11 at 08:47 -0600, Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Thu, 09 Aug 2007 19:38:03 -0700
> From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Grounding (fwd)
> 
> Hi Tony,
> 
> I divide my grounds between a dedicated ground (RF) and mains ground. I 
> use a little different hookup between my NST powered and pig powered 
> coils. Because NST's are core and case grounded to one end of each 
> internal HV coil, I ground the NST to RF ground. The primary is floating 
> and can't be tied to ground. Mains ground ends at the control panel. For 
> my pig applications, I ground one hv bushing to RF ground and tie both 
> the bottom secondary and inside turn of the primary to RF ground (with 
> the pig, we are not limited to a floating primary, but we could run in 
> that fashion if desired).
> 
> Keep this in your mind: Anything you will come in contact with while 
> running the coil should be at mains ground. RF ground is used for a 
> couple reasons; 1) to attach ground where needed and 2) to separate RF 
> ground from mains ground to prevent as much RF hash from getting back 
> into the mains ground line (which is connected to all the house wiring).
> 
> It is good to have several RF ground rods or even a mesh buried between 
> them for a better ground connection to earth. There's no problem with 
> doing that. It is labor intensive, but a good idea especially in areas 
> where the ground is very dry. In areas where there is a decent amount of 
> rain fall and the ground is relatively moist, even a single ground rod 
> will be ok.
> 
> One other aspect is running without an RF ground altogether. The coil 
> will work, sure, but this mode of running a coil is unwise because the 
> coil will find it's way to mains ground one way or another. This can be 
> lethal for the components in your house and neighboring houses. Even a 
> rod in really dry ground can cause the same situation.
> 
> Take care,
> Bart
> 
> 
> 
> Tesla list wrote:
> 
> >---------- Forwarded message ----------
> >Date: Thu, 9 Aug 2007 21:23:33 -0700
> >From: Anthony R. Mollner <penny831@xxxxxxxxxxxxx>
> >To: Tesla list <tesla@xxxxxxxxxx>
> >Subject: Grounding
> >
> >I've heard a few things about grounding and I was hoping to get some real
> >insight on this. Ok, the secondary deserves a really good ground connection
> >but what about the power supply and the tank circuit? Not to mention any
> >other line or transformer circuits that might be included? Should all
> >grounds be independent? Should they all be attached to the same ground rod?
> >How about multiple grounding connections like water pipes and ground rods?
> >Should the ground connection at the panel be used as well or separately from
> >the rest of the circuit? My experience has been that the more the better,
> >tied together or not.
> >
> >Tony
> >
> >
> >
> >
> >
> >
> >  
> >
> 
> 
>