Re: 12" coil first light (7 foot arcs!), live case and cabinet

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

Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bigfoo39-at-telocity-dot-com>

Tesla list wrote:

>  I ran it for a few minutes, then, nothing....... The earth
>leakage detector had tripped. I reset it and the coil ran fine for about
>2-3 seconds, then the detector tripped again. I don't know what is going
>on. I have had this problem before. My power cabinet seems to be
>electrically sound (it will run a jacobs ladder fine, and tonight was
>the first time I have used it with a coil). It only happens when running
>a big coil. I can't find any arcing to any house wiring or anything. Is
>it possible that the coil is inducing a current in nearby house wiring?
>I don't know what is going on. I had this problem the last time I fired
>my six inch coil. There are no shared parts with the old 6" coil and the
>new 12" coil except the arc welder ballast, which leads me to suspect
>the welder. Maybe it gets warm and the insulation fails? It's pretty
>old. Any tips would be great!!
>
>Cheers, 
>
>Greg Peters
>
snipperzz  and a few more snipperzz...

Hi Greg...

I also am running a 12 " secondary and even tho I have a HUGE set of RFI 
filters in my system ( 2 60 amp filters, one for each leg of the 240 
input), I still get "feedback " to my control cabinet in the form of 
"consistant " static electricity. Lets say its a feeling of hi voltage 
spiking with low amperage ( current). I notice this effect more so when 
the coil is running without a direct strike to a grounded rod. When I 
use a grounded rod ( 8' pipe within 10' of the coil) the "feedback" from 
the coil is minimal ( cant tell if there is actually any voltage 
"eminating" from the case to me) but when the coil is running without 
the "grounded pipe" to strike to, I refrain from touching the case of 
the power supply.

I have also noticed this same situation with my smaller coil ...   the 
case of the controller is not touch friendly even though the case is 
grounded to the supply ground.....

Maybe some of the Guru's of T coiling have an answer.....  

are we being subjected to some RF form of voltages that find the case 
resonately compatible ???

another situation that I have noticed is that the roller track of the 
garage door on my shop is "VERY" suceptible to the "buildup" of charges 
compared to other metallic items in the shop area.

I have seen on several occasions, small streamers ( sparks) jump to ( 
from?????) the ground rod ( which is only 1" from the track of the shop 
door ( this is one of the ground rods I use for the RF ground for my 
coil). I have also noted that if I come into contact with the roller 
trac while the coil is running ( distance is at least a minimum of 15' 
from the coil) I get a rather NASTY shock from the track. ( Now mind 
you, the track is "fully" insulated via wood beams but 1" from the 
ground rod ).

hmmmmmmmmm    thinking again...


Scot D