Re: Variac Rewinding ?

Subject:  Re: Variac Rewinding ?
  Date:   Thu, 12 Jun 1997 01:36:55 -0400 (EDT)
  From:   richard hull <rhull-at-richmond.infi-dot-net>
    To:   Tesla List <tesla-at-pupman-dot-com>

At 07:55 AM 6/11/97 -0500, you wrote:
>Subject:     Re: Latest magnifier results (variac)
>      Date:  Wed, 11 Jun 1997 19:34:39 +1000
>      From:  Peter Electric <elekessy-at-macquarie.matra-dot-com.au>
>        To:  Tesla List <tesla-at-pupman-dot-com>
>           1
>Tesla List wrote:
>> Subject:  Re: Latest magnifier results (variac)
>>   Date:  Tue, 10 Jun 1997 23:58:20 -0400 (EDT)
>>   From:  richard hull <rhull-at-richmond.infi-dot-net>
>>     To:  Tesla List <tesla-at-pupman-dot-com>
>> snip
>> >>
>> >
>> Dood man Bert!  Most folks would throw up their hands at a fused
>> variac.  I
>> place a turn around value to begin with 20amp units and above.  Smaller
>> units can often be purchased cheaper than the labor and hassle of
>> repair.
>> Plus the big 'uns give us folks with 5 thumbs on each hand a chance to
>> really stand a chance.  5 amp jobs are for watch makers!
>> Richard Hull, TCBOR
>Richard, I have scored a large variac rated at 100V input (I think its
>from Japan) and 20A output. Its not much use to me here in Aus because
>we only have 240V mains but you mention repairing these units. Would it
>be feasible for me to re-wind this unit with thinner wire and more turns
>for 240V operation?
>If so, how easy is it to wind wire neatly round a toroidal core?
>Any help would be most appreciated.
>Peter E.
Rewinding a variac core from scratch is as close to impossible as
gets!!  It would be a labor of love and the core for a 120v version
handle far less amps than your current one is rated at.  The power level
could be about the same though, I would imagine.

R. Hull, TCBOR