Re: Metal Rotor = Isolated Motor?

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 6/23/01 10:14:38 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:

> Dear List,
>  
>  After corresponding a bit with Jason Johnson regarding
>  his MOT coil with RSG, I have a question:  If one uses
>  a metal rotor on an RSG, is isolation of the motor (or
>  the rotor) required?  I'm asking because I assumed
>  isolation was neccessary, but Jason tells me his RSG
>  motor isn't isolated. Why doesn't the 4KVAC instantly
>  fry his RSG motor?
>  
>  Regards,
>  
>  Greg

Greg,

I've heard of some folks having some success of this sort.
I suppose that if one side of the tank is grounded, then this
may help some to protect the motor.  Still, I'm surprised 
these set-ups last as well as they do.  One could use
a 120V - 120V HV isolation transformer to power the motor
I suppose, but it still all seems treacherous to me.  I always
use an insulated rotor.  

John