Check 408.16(F) back fed devices.
Switches and breakers used as switches must also be indicating, i.e. off /on if not verticle. 404.7
I think these references are the ones you need.
Alan--
Just reread the question...same references plus UL listing.
Is he using a double pole breaker with line on one terminal and load connected to the other half ?????
When the breaker is off it is still energized. Why does he use an enclosure instead of just wrapping tape around the bomb he has made.
Alan--
