Re: [TCML] More Newbies Questions - grounding and earthing

["jeff mill" <jeffmill2@xxxxxxxxxxx>]

Hello,
I am also new to coiling. I am on my second one, a rotary.
Here is what I interpret from all I have read.  Think, every grounding point 
from the nts secondary and further out, that has a potential to arc to a 
ground, should be grounded to the RF ground, nothing else. Even the motor 
frame that drives the rotary spark because, if a failure occurs with in it 
HV could arc through it. The frame of the nst (midpoint gnd), center of the 
terry filter and bottom HV secondary connection should be RF gnd , nothing 
else other than a "spark to" electrode. Do not ground any leg or midpoint of 
the caps.

Thanks, JM

-----Original Message----- 
From: Peter Sutter
Sent: Thursday, February 09, 2012 10:26 PM
To: Tesla Coil Mailing List
Subject: [TCML] More Newbies Questions - grounding and earthing

G'day coilers,

I found a 240V mains - 12 KV 30 mA NST. (F.A.R.T.) The high voltage midpoint 
is tied to Mains Protective Earth. I presume that the
Mains Protective Earth is NOT to be connected, but should be on RF Ground? 
Is this correct?

Despite all warnings against homemade capacitors, I made up two tank caps 
out of overhead transparency foil and Aluminium foil. I
immersed them in mineral oil. Both appear to be working; at the moment. Each 
has 35 nF and these are wired in series to give the
17.5 nF required. Question Should I connect the midpoint of the two 
capacitors also to RF Ground?

With any HV transformer that has the HV midpoint earthed, should I generally 
connect the midpoints of the terry filter, main caps
etc. also to to RF Ground or should I leave them 'floating'?

Thanks

Peter


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