Re: Grounding pigs

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 2/14/02 4:19:25 PM Pacific Standard Time, tesla-at-pupman-dot-com 
writes:

<< 
 So, what is better? To have the strap connected, or disconnected? I've got 
 one of these too :)
 
 
 
 
 
 Christopher "Duck" Boden Geek#1 >>

Hi, Duck,

If you want to run your pig on 240 volts as opposed to 120 volts,
you MUST remove the strap. A typical pole pig actually has (2)
identical secondary (primary for coiling purposes) coils that are
center-tapped at the center LV terminal and the strap, if so
equipped. Normally the two low voltage windings are internally wired 
in series, so each of the 120 volt windings in series equal  to 240
volts. However, they can rewired to be in parallel so you can 
run your pig on 120 volts and, in this case, you could leave the 
"strap" in place as a center-tap ground. Remember that you 
must also double the input current that would be required if 
running on 240 volts and I don't think most coilers fancy the 
idea of running a special 120 volt service capable of >100 amps :-)

Coiling in Memphis,
David Rieben