I wouldn't be at all surprised to see this in a non-residential setting.
That's generally where the attitude of "get it done NOW" and "get it done CHEAP" are all too common.
I seem to remember a posting on this board about an electrical closet with a transformer that was fed by cables laying on the floor that were fed by an open panel with 'protective cardboard' over the live bus...and THAT particular installation was many months old.
