Re: Ebay Pole Pigs

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


Yes, Ken, that's correct.  Unballasted pigs in short circuit like a TC or
Jacob's Ladder draw more current than most 220 V services can provide.
Also, you tend to fry the pig.

Dr. Resonance
 >  >
 >  >
 >  > The reason is a pole pig does not see short-circuit operation in power
 >  > distribution applications.
 >  >
 >  > In a TC circuit when the sparkgap fires the power xmfr is, for a short
time,
 >  > in a direct short circuit.  External current limiting must be provided
as
 >  > the short circuit current draw for a standard pole xmfr is 733 Amperes.
 >
 > Where does this number come from? With numerology, I can figure 733 amps
 > with a 10kVA transformer built to 5.7%IZ that's shorted out and being fed
 > 240 volts. Is this what we're talking about as "standard"?
 >
 > KEN
 >
 >
 >