The results were shocking! (yeah it bit me once!) Nasty! Like an electric fence. The transformer puts out 7500 volts from 120 V. house current. It arcs continuosly if the air is still and the temp. and humidity are just right. If it stops, I tease it with an insulated stick. Then it goes berzerk but settles down. I should have the more common 12,000 volt neon transformer for a better arc but it's fun the way it is. I tried it outside in this photo with an extension cord but it likes still air the best. Then I can smell the ozone.