Re: Re: T-24 Hours Until New (Really Bright 10KVA) Light...

["Ryan Ries" <spud@wf.net> (by way of Terry Fritz <twftesla@uswest.net>)]

	Why is 8 ohms too much?  Is not as simple as 240v / 8ohms = 30A?  Or is it
just because of the extreme heat/power loss?

	Ryan Ries

----------
> From: Tesla list <tesla@pupman.com>
> To: tesla@pupman.com
> Subject: Re: T-24 Hours Until New (Really Bright 10KVA) Light...
> Date: Thursday, September 14, 2000 12:53 PM
> 
> Original poster: Esondrmn@aol.com 
> 
> In a message dated 9/12/00 9:47:02 PM Pacific Daylight Time,
tesla@pupman.com 
> writes:
> 
> << 
>     My 10KVA pig has been sitting very patiently in the garage awaiting
its
>  moment of glory.  We have almost finished wiring up the big extension
cord
>  that is to be run from the big 240v dryer outlet.  Very convenient since
>  that is only about 10 feet from where the transformer will be.  We have
a
>  great arc welder to work with for ballasting, but I also went to the
local
>  junkyard and ripped an element from a dryer.  With my DMM, it measures
>  about 8 ohms.  Does that sound right?  I hope so, because I like the
idea
>  of my coil running at a cool 30 amps. :-)  Also, I imagine that that
>  element is bound to get VERY hot.  What do ya'll suggest to keep it
cool?
>   >>
> Ryan,
> 
> 8 ohms of resistance in series with the inductive ballast is a bit too
much.  
> You want somewhere in the range of .5 to 2.5 ohms.  I used to use an
array of 
> about 7 oven elements wired so I could switch in only one or all 7 of
them in 
> parallel.  I now use fixed resistors.  I use a large fan blowing on the 
> resistors to help get rid of some of the heat - and yes, they do get real
hot.
> 
> Ed Sonderman
> 
> 
>