How does this look? The rule would cover all equipment not just the few items where the term "sharp edges" is used in the NEC.
110.12 (D) Sharp Edges. Field modified electrical equipment shall be designed and installed so that conductors will not come into contact with sharp edges. All sharp edges shall be removed.
Sharp edges are not permitted on new equipment of various types. Search for "sharp edges" in the NEC CD Rom version.
