The purpose of this high current high voltage power supply is nothing more meaningful than drawing huge arcs :). This high voltage power supply contains 6 MOTs (transformers from microwave ovens) connected to two triads. In each triad MOTs are connected both primary and secondary in parallel. Theese two trios are then attached in series and supplied from the two phase voltage 400V~. The current is in the primary damped by two modified ballasts for 150W sodium lamps (made by TESLA). They are modified by removing the "U" part of the iron core, leaving only "T" part. After adjusting the choke has about 35-36mH. Their wire has a diameter of about 1 mm. On the output side they are connected to resonating capacitors from microwave ovens, each has approximately the 1uF 2100V~ with a total of 16 pieces. Reason to connect capacitor is again prosaic: With them, you can get longer high voltage arc :). MOTs 12 + 13 + 14 in one stack and 5 + 10 + 11 in the second stack were used from my table of MOTs. Supply is not designed for continuous operation. Video was filmed in 2 steps - in the meantime it was necessary to let the ballasts and MOTs cool down. Output voltage is about 4000V~. This high voltage power draws the current approx 40A from 400V. The 16A circuit breaker in class B does not trip. When I tried to increase the number of capacitors from 16pcs to 18pcs, the circuit breaker trips immediatelly.