RE: Variac ratings

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "brianb by way of Terry Fritz <twftesla-at-qwest-dot-net>" <brianb-at-antelecom-dot-net>

Dan/all,

I have Statco's overload graph on my website. Two times the faceplate rating
isn't a problem if the duty cycle is kept reasonable.

http://fp2.antelecom-dot-net/brianb/images/Tesla/download.htm

Regards,
Brian B.

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Monday, December 16, 2002 4:06 PM
To: tesla-at-pupman-dot-com
Subject: RE: Variac ratings


Original poster: "Mccauley, Daniel H by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>



Thats cool.  I'll probably do that then.  I only run my coil for a small
amount of time (minute at most).
I'll first measure my current into my NST first and then try some PFC caps
on it to try reduce some current.

Dan



  >My question, is can you push a variac for short periods of time.  In
  >example, can i push my 8.5A variac to say 12A for
  >short periods of time.


Dan,

Yes, most variacs can be pushed to 2X rated current or more for short
periods
according to the manufacturer's spec sheets.

I always ran my 2400 watt, 24" spark tube coil using a 7.5A , 120V variac,
although this was pushing it a bit much perhaps.

John