Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dbanse-at-comcast-dot-net> I have a 15kV 60mA NST.... What should I do to protect it....RF chokes?? Although I heard RF chokes aren't a great way...... ...and if RF chokes, is there a formula to how many (and what size) windings??...also what guage wire to use? Thanks, Jaime