I agree with Hydrocars,
If water can be broken into HHO using voltage potential as stated by Stan, water would have to be in gas form (steam).
This is when water molecules are not bonded to each other.
As hydrocars mentioned, when water starts boiling AMPS will go down, and you can up the voltage and AMPs will drop a little more.
as you can see in this video:
It started at 50 volts, and ended at 130 volts, and at 130 volts AMPs went down.
This matches Stans Graph about Amp Restriction.