Re: [TCML] Can i use an NST as ballast ?

[jimlux <jimlux@xxxxxxxxxxxxx>]

McCauley, Daniel H wrote:
> It is indeed inductive ballasting.
> If you measure the 500ft spool of wire you get about 0.9 ohms resistance and 10.50mH inductance.  Current limits to about 25A.
>
> Terry Blake was the first to use this type of ballasting for a 14.4kV Potential Transformer.
> You can see more of his measurements here on this ballast.
>
> http://www.tb3.com/tesla/mrun/index.html

And, if you need to cool it, you can throw it in a bucket of water. 
Thermal time constant is pretty long, though...the water can't get to 
the inner part of the "winding"

But, 25Amps at 1 ohm is only 25W, and a spool is pretty massive.

you could use salt and ice and precool the spool to reduce the resistive 
losses, even.
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