Grounding....Re: [TCML] Line Filter Rating

[davep@xxxxxxxx]

>> I'm curious about your report of killing an NST in a coil that was
>> not properly grounded - I've not heard of such a failure mode before.
>> It's clear that without a proper ground, that the RF return path will
>> occur _through_ the NST and into the mains wiring.  Do you know just
>> what it was in the NST that failed?  Primary to core insulation?

> To be honest, I haven't done any post mortem on it.  It was an old 9/30
> that I was using in a small coil.  I forgot to hook up the bottom of the
> secondary to anything.  I was fooling around with the coil and noticed
> that the sparks were very different,

   One of the unwritten laws of coiling:
     There is ALWAYS a ground:
       designed in
     or
       stray capacity
     or
       accidental...

   best
    dwp

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