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Re: Very Confused On Grounding



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
....