Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <A123X-at-aol-dot-com> Your supposed to hook NST's in parallel, unless thats what you ment. In series you will kill your precious 15000v/60ma NST's. In a message dated 4/13/01 8:06:39 AM Eastern Daylight Time, tesla-at-pupman-dot-com writes: > > , And hooked 2 15KV 60ma NST's in a series.