Re: [TCML] Pushing a variac beyond rating

[Scott Bogard <sdbogard@xxxxxxxxx>]

I've been using a 15 amp variac for up to 30 amp loads for 10 minute
runs for a long time, I would say you are fine.  I would not put it in
oil, one because that is a mess, two I'd be concerned about dissolving
your brushes, if it gets hot shut it off, go by that and you should be
fine.

Scott Bogard.

On 5/20/11, Nicholas Hall <ngharo@xxxxxxxxx> wrote:
> Hello list,
>
> I have a Staco 5A variac that I've used with my 15/30 NST powered coil with
> no problems.  I've now upgraded to a 15/60 NST.
>
> I'm wondering how Variacs fail and if it's Ok to overload them for short
> periods.  I'm also wondering if keeping it in transformer oil would help.
>
> At this point I cannot afford a new variac (they're fairly expensive on
> Ebay) so if anyone has input it would be much appreciated.
>
> Nicholas Hall
> 262.706.1337
> ngharo@xxxxxxxxx
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