Subject: Re: Variac
From: Terry Fritz <twftesla-at-uswest-dot-net>
Date: Wed, 21 Jul 1999 18:45:38 -0600
See the chart at:
This shows how long you can overload a variac and how long it needs to cool
afterwards. Apparently it is pretty generic and applies to most typical
At 07:07 PM 7/21/99 -0400, you wrote:
>I've been looking around for a Variac and I've noticed that while all of them
>run around 0-140 volts they have widely differing amp ratings. How large of
>an amp rating do I need for TC use? I know that I could just look on my
>xformer and see that it draws 2.2 amps and use that as a guide but I plan to
>get an NST to replace my OBIT soon and I don't know how much current they
>pull. Will a 5 amp variac work or do I need to go with the larger 30 amp...or
>is there somewhere in between that would be more suitable to TC use?
>Left, left, I hadda good brain but it left...