Securing and supporting a speaker cables in an existing building. NEC 300-11 is not clear to me if a small audio cable can be ty wrap to the grid support wires. .NEC does not make any reference to plenum rated raceways in articles 725,760,780 and 830 as the author's comments. My problem is that The Osceola County School distict do not want me to attach the small cable from the grid suppot wires. To comply to the inspector we need to do a very complex retrofit that was not included in the contract. Any sugesstions?