Re: Variacs and PT

["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 12/23/01 2:18:01 PM Central Standard Time, tesla-at-pupman-dot-com
writes: 


>
> Original poster: "Matt Skidmore by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <fox-at-woozle-dot-org> 
>
> BTW, 
> this is what I had in mind. 
> http://potluck45.homestead-dot-com/files/DualVariac.jpg 
>
>
> what does that allow for? 240 voltage at 25amp, or 240 at 50 amp? 
>
> -matt 
>
>


Matt, 

Assuming that your variacs are each rated at 120 volts in/ 
0-120/140  volts out, then this setup should give you 0-240/ 
280 volts at 25 amps output, since the variacs are in series. 
If you were to wire them in parallel (this may require an 
equalizing choke inductor), then you would have 0-120/140 
volts at 50 amps out. You would have to use (4) of these 
variacs in a series-parallel configuration to get up to 240/ 
280 volts with 50 amps. 

Hope this helps, 
David Rieben