Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <CTCDW-at-aol-dot-com> Considering the small amperage that NST's produce, 16ga wire is fine...the benefit to HV wire (which I used) is that it is insulated for the high voltages. If the wire does not pass near other objects, I can see no real need for it. Chris W