Original poster: Mddeming@aol.com In a message dated 9/11/03 2:29:02 PM Eastern Daylight Time, tesla@pupman.com writes: What's wrong with applying 140V to an NST through a Variac? Gary Lau MA, USA Hi Gary, All, It's not wrong per se. It's just like winding out the family car to 12,000 rpm. I wouldn't recommend it to a newbie driver. Matt D.