Re: Run a 120v variac on 240???
Okay, on a similar, but opposite, note, how many amps, at 120V 60Hz,
could a 220V 10A 50Hz variac handle? At a 2200VA rating, I would think at
least 20A, but the the 50Hz rating will allow it to carry even more
current at 60Hz, won't it?
I have two, and might like to gang them to control a potential
transformer or small pig in the future...
This is an interesting variac...
Variatore Di Tensione
(lic. General Radio Co.)
Ing. S. & Dr. Guido Belotti
Piazzo Trento 8- Milano
I don't speak Italian, but I can guess what most of that means.
With Silent Lightning in my hands,
Grayson Dietrich, Medina, OH
See my HV Haven (it does NOT do jusctice!)
On Thu, 08 Jul 1999 16:47:05 -0600 Tesla List <tesla-at-pupman-dot-com> writes:
>Original Poster: FutureT-at-aol-dot-com
>In a message dated 99-07-08 05:29:47 EDT, you write:
><< Hi everyone,
>> I got to thinking again, shame on me, and thought what would
>> happen if I ran my 120v 20A Powerstat on 240v. It's rated at 2500va
>> so that would limit me to 240v -at- 10A. There is probably some reason
>> that I can't think of right now why this can't be done. >>
>If you apply 240 volts to a 120 volt powerstat, the core will
>and the unit will draw too much current and heat up, and probably
>burn up. (I've never actually tried it, and I don't intend to.) For
>core size, there can't be over a certain amount of volts per turn.
>given core size, a 240 volt variac is built with a greater number of
>to take care of this. This applies to any transformer, and explains
>you can't apply 240 volts to a 120 volt NST (for example). (not
>toasting it anyway).
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: http://dl.www.juno-dot-com/dynoget/tagj.