Original poster: "Justin Hays by way of Terry Fritz <twftesla-at-qwest-dot-net>" <pyrotrons2000-at-yahoo-dot-com> If you can start an arc at 4 inches, and your meter is saying 50kV, chances are, it's 50kV ; ) Justin Hays KC5PNP Email: justin-at-hvguy-dot-com Website: www.hvguy-dot-com