Okay, I should know the answer to this, but for the life of me, I cannot locate a reference in the NEC. If someone could point me in the right direction, I would appreciate it. On a recent home inspection report, the home inspector cited "mutiple conductors improperly connected under the same screw on the neutrel bar." I see this quite a bit on inspection reports, and usually I can just remove one of the conductors, and move it to an empty hole on the neautrel bar. However, there are no empty spaces available on this panel. It is a Cutler Hammer, BR series, and even though the house is over 10 years old, the electrical system looks good overall. I don't know who the electrician was who wired this house when it was built originally, but he obviously took pride in workmanship. This electrical system looks so good overall that I want to be sure that there is a code violation before I recommend a costly repair to the seller.