Re: Very Confused On Grounding

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

If it has a metal case, they assumed the case would be bolted to a grounded 
metal chassis.  Ground the metal case.

If the case is plastic, I don't know what is going on...

Cheers,

        Terry

At 12:13 PM 5/15/2005, you wrote:
> I was thinking about doing the same thing.  The only difference is my EMI 
> filter does not have a spot for mains ground.  There is just two wires in 
> and two wires out.  I also will not be using a variac so my mains ground 
> has no reason to be used (thus making it probably even safer for my houses 
> equipment.  Other than that I will connect the NST case, one end of 
> filter, safety gap, strike rail, and secondary base to RF ground.  How 
> does that sound?
>
> > From: "Tesla list" <tesla@xxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Subject: Re: Very Confused On Grounding
> > Date: Sun, 15 May 2005 11:09:51 -0600
> >
> > Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
> >
> > Hi Terry,
> >
> > I still think it is best to connect the NST case, your filter, safety 
> > gap, strike rail, and secondary base to RF ground.  The variac case and 
> > EMI filter should be connected to mains safety ground.  RF on the NST 
> > case will be common mode on the line input and the EMI filter should have 
> > a common mode choke (or two) in it.  Personally, I dont want to take any 
> > chance of a discharge resulting in transient current traveling down (or 
> > up) the mains safety ground.  This could be catastrophic to any 
> > electronics plugged into the mains, whether turned on or off.  Grounding 
> > the coil system to mains safety ground, I believe, should only be 
> > considered when the coil is operated inside where earth ground is not 
> > easily available.  For this case, the coil should be used with a 
> > counterpoise, the power kept low, and great care be taken as to what the 
> > streamers can strike.
> >
> > Gerry
....