it is not atmospheric as the output could go to 3tons a sq inch and there other ways of creating pure plasma with out induction the voltage at present is not that high, the current can be around 20- 30amps at this low input of the water input, as this is at 1/40th . I will soon change the plasma generators power supply that Ii am using at the moment I can not tell you more more on the project it was just to show you that what can be done.
using an arc immersed in water it not any thing that could be made into a profitable commercial process.
this output could also have the temperature massively increased to over 25,000C with just a little more power.