Do I need to hire a professional to install Nucleus? Jacqueline DeJesse Updated August 21, 2018 22:52 Follow While it isn’t necessary to hire a professional, we recommend hiring a professional contractor if you would like to hide the wires of wall-mounted units using a Power over Ethernet (PoE) network. Related articles Will Nucleus fit on my wall? What is Power over Ethernet (PoE)? Comments 0 comments Please sign in to leave a comment.