Well, after sitting on the sidelines with this topic, I now have some thoughts
After reading the thread in the other section of this forum, and learnig about the 75 amp trip requirement, Id like to ask what happens if an arc fault (parallel) occurs that has a high enough impedance to limit the current flow to 10 or so amps. Most of us know that arcs are so hot that a welding machine will melt steel at much less than 75 amps.
I was under the impression that these devices "recognized" the asymmetrical wave form associated with arcing, regardless of the magnitude. So what happens to a high impedance arc that limits the current to about 10 amps? Do we have to wait until a low enough impedance path results, or will they trip at the 10 amp level due to the "noisy" waveform?
