Niekie, you should see what can be done with a 15 farad capacitor bank on my 600 amp CC. welder. (How many joules does that work out to at 21 arc volts?) I have enough instantanious current to vaporise a Hobart 600 amp gun.(No, I didnt do that on purpose).
That big of a cap bank has a strangely curious way of straightening out the droop on a smaw rig.
Back to the subject, I really don't know why certain manufacturers claim that a feeder will work on CC, as the applications for it are rather narrow. I was merely expressing the fact that a voltage sensing feeder is a compromise, and not a very good one at that, as I learned the hard way.
PS. I've quailfied my power source and process for my application (architectural free-form arch structures).
On a far horizion I see some new equipment, for now, money dictates that I keep the present set-up.
supermechanic