Re: pushing a variac

In a message dated 96-04-03 13:14:06 EST, you write:

>>        Can this transformer be operated at higher current levels than its
>>amp design spec?  It has a 30 amp fuse, so this will obviously need to
>>go higher.  I would like to operate it intermittantly at 40-45 amps.
>>Would forced air cooling help?
>If you immerse it in transformer oil, you can usually double the amperage
>capacity of the variac.


 I am interested in how you came up with that data. I was thinking of 
my powerstat by blowing tons and tons of air past it.

I am wondering what other people have have done for cooling these 
and at how many amps do they actually melt?

Kevin M. Conkey