Re: MOT info

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Rich Simpson <richcreations@xxxxxxxxx>


On Dec 29, 2004, at 2:39 PM, Tesla list wrote:

> Original poster: "Black Moon" <black_moons@xxxxxxxxxxx>
>
> Uh guys, there IS no cost diffrence beween 120v at 60amps and 240v at 
> 30amps, your charged by the watt, not by the amp.
I was the original poster, and I do not think that anyone said anything 
about 120v 60-amps vs 240v 30 amps, we were talking about 240v 60 amps vs 
240v 30-amps which is half the watts.

I did say I had a dual 120v variac but 2 legs of 120v is 240v which is how 
I am using the unit, as such the unit is rated to 240v/22-amps, I want to 
keep my current low enough to not burn out my variac, So I need an 
inductor(s) that will do this. I am aware that I will need two of them, one 
for each 120v leg. someone suggested 500' rolls of #10 or #12 wire, that 
sounded easy, and I have seen such on the net, but he also said it would be 
around 26-amps, what confused me is that when I have seen this on the net, 
there was no core and I sorta thought you needed one. I have seen on the 
net where someone wound wire around a pvc pipe that they could fill with 
welding rods. If a 500-ft roll of #12 wire with no core will limit to 
26-amps, would 500-ft of wire wrapped around a pvc pipe with out a core 
also limit to 26-amps, or does the # of turns matter more then wire length? 
then I could add a removable core to further limit the current. Let me know 
if I am completely misunderstanding the concept here...

> > From: "Tesla list" <tesla@xxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Subject: Re: MOT info
> > Date: Tue, 28 Dec 2004 11:49:28 -0700
> >
> > Original poster: Rich Simpson <richcreations@xxxxxxxxx>
> >
> >
> > > I wouldn't worry about the difference cost wise between 30A and 60A 
> > > draw. Assuming you run it for an hour a day at ~14 kW (plenty enough to 
> > > annoy/scare the neighbors/police/swat team) over a month that's $84 vs. 
> > > $42 for ~7kW. I seriously doubt you'll actually run it that much before 
> > > spark gaps need replaced, ears need a rest, etc. I think it's always 
> > > easier to use inductive ballasting and cheaper. With caps you'd need 
> > > lots of them in parallel to handle the 30-60A and you'd need lots of uF 
> > > (about 100uF for around 25A limiting off the top of my head). I haven't 
> > > actually tried this myself, but seems like the caps would heat up like 
> > > resistive ballasting. I personnly would just use the hardware store 
> > > ballast, (2) 500' rolls of 10-12 awg for 26A limiting.
> > I just got my new bigger variac, it is a new dual 120V/22A (motorized) 
> > unit that I paid dearly for, and I really do not want to burn it out, 
> > what should I do to get the current down to 22A@240v? Again this was for 
> > a 6 or 8 mot stack (which is just until I can save up for a pig or more 
> > neons as all I have is a 6kv/30ma neon (and that is just not enough for 
> > my 4 inch coil ;-)
> >
> > Thanks Again
> > -Rich