VTTC – Results 3 By davek0974 | 29/03/2004 - 1:36 pm |11/04/2015 Tesla Coiling, Vacuum Tube Tesla Coil Feeling a bit bold, I removed the earthed wire target and turned the input up to the limit of my control box – about 110v at 5A. The long streamer running up to the top left is about 100mm long. Bookmark the permalink.