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I have been assigned a new project for an electrical device for use in a &quot;ceiling tile / suspended ceiling&quot; setting. It is a low voltage device (only 9V DC running into the ceiling).<br> <br> Does anyone know what UL or NFPA plenum ratings I will need on my enclosure, cable, and...

I have been assigned a new project for an electrical device for use in a &quot;ceiling tile / suspended ceiling&quot; setting.<br> <br> Does anyone know what UL or NFPA plenum ratings I will need on my enclosure, cable, and connectors.<br> <br> Plenum rated cat-5 cable is available, but I am...