Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <PeterCGMN-at-aol-dot-com> This helps but how much power does one need? In my coil I have a transformer that puts out 6500 volts, would that be sufficent? I was also wondering if anyone could tell me what causes the arc to move up the elements? I have always wondered this. 73,Kcoion,"Ion-Boy"