Re: PE Stamp in MA
It is the same in any State: PEs can only affix their seal on work that they performed, or that was performed under their supervision, and that is within their field of expertise. The answer to your question is, "Yes, a Mechanical Engineer who has a significant degree of knowledge and experience in electrical design can seal an electrical drawing." I have known, for example, a person with a BS Degree In Electrical Engineering and an MS Degree in Mechanical Engineering. But such persons are rare.