Re: Triggered Gap Safety

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

Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>


At 10:53 PM 23/08/02 -0600, you wrote:
>Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Zimtesla-at-aol-dot-com>
>

SNIP

>
>Before I could work this out, a minor electrical catastrophy occurred.
>The triggered gap was feeding high voltage from the ignition coil into
>the ground of my NST and back through the controller to the house mains.
>Eventually a short between the receptical ground and house hot lead 
>occurred with a bright arc and tripping of the circuit breaker. 
>
>Just wondered if others had experienced feeding high voltage back through
>ground and to warn that this is something not to be ignored.
> 
>Jim 
>

Hi Jim, Coilers,

That sounds very similar to the problem I had the other night when I had
a serious arc over from my outer primary turn to the strike rail which 
in turn lead to blowing the entire back out of the 240 receptacle in my
contactor box.  Luckily, nothing else seems to have been damaged, but I
am in the process of re-designing my grounding system and putting some
protective devices in to try to prevent a re-occurance.

73, Weazle, VE3EAR/VE3WZL
G-1#1214

Listening: 147.030+ and 442.075+
E-mail:    weazle-at-hurontel.on.ca
           or ve3ear-at-rac.ca
Web site:  http://www.hurontel.on.ca/~weazle