Re: RF Ground, House Ground, Ground....

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

Original poster: "Daniel Hess by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dhess1-at-us.ibm-dot-com>


Allanh;

Yes. Basically I measure the RF ground rod to house ground via the nearest
grounded outlet in my shop. This also includes the 40 feet of 4 gauge cable
which delivers the RF ground to my secondary base. Have to keep in mind
that the outlet's ground is going to have a little resistance of it's own
as it makes its way back to the breaker box where the house's ground should
be bonded, so have to take this in to consideration. I'm certain that this
is not the ideal reference point but the gist of this thread is that your
RF ground should not have a lot of resistance and if it does, need to find
out why else it probably won't serve effectively.

Daniel

"Tesla list" <tesla-at-pupman-dot-com> on 06/23/2002 02:02:00 PM

To:    tesla-at-pupman-dot-com
cc:
Subject:    Re: RF Ground, House Ground, Ground....



Original poster: "Allanh by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<allanh-at-starband-dot-net>

I've never seen data to indicate that ground conductivity in the U.S.
approaches 1.5 ohm. I'm wondering if you are measuring between the ground
rod alone( no wires connected to it) and the power company ground. If you
have any wires, other than the meter, connected to the ground rod, you have
a false reading.

allan

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, June 05, 2002 10:28 AM
Subject: Re: RF Ground, House Ground, Ground....


>
> Original poster: "Daniel Hess by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dhess1-at-us.ibm-dot-com>
>
>
> Matt;
>
> Sounds like your ground may be sufficient. You can test it by measuring
the
> resistance between the RF ground and the house ground. Ideally, I believe
> you want to read no more than 1 ohm. Mine tests out a 1.5 ohms but seems
to
> be performing adequately. I'm also running a 4 Ga. cable from the base of
> my secondary to the RF ground; even if the resistance between house and
RF
> ground is low, too small a gauge cable may not handle the current and
it's
> performance may suffer. If the resistance is too high you may have to add
> additional ground rods. I use six x 10 feet x 1/2" copper water pipe.
>
> Regards,
>
> Daniel
>
> "Tesla list" <tesla-at-pupman-dot-com> on 06/05/2002 09:12:53 AM
>
> To:    tesla-at-pupman-dot-com
> cc:
> Subject:    RF Ground, House Ground, Ground....
>
>
>
> Original poster: "Matt Woody Meyer by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <meyerml-at-stolaf.edu>
>
> Just for clarification sake, I'm curious if there's any major difference
> between
> the RF ground that you're all using and mine.
>
> My ground is simply a long copper tube driven a good 6-8" in very moist
> soil.  My
> protection filter and my secondary are grounded to seperate tubes, and
then
> a
> discharge rod (long wooden stick with a nail in the end of it wired to
> ground) is
> grounded to a third (Discharge rod used for discharging coil after
> operation and
> also for measurement purposes (never manually held near coil while in
> operation)).
>
> Is this an appropriate RF ground, or should I be doing something else?
>
> Thanks,
> ><>Matt
>
> ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>
> Matt "Woody" Meyer                  St. Olaf College Physics Major
>
>
>
>
>
>
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>
>