Audio cables installed exposed on the surface of ceilings and sidewalls shall be supported in such a manner that they will not be damaged by normal building use. Cables shall be secured by _____ designed and installed so as not to damage the cable.
a) straps
b) staples
c) cable ties
d) any of the above
See answer and applicable Code reference
The correct answer is: d) any of the above
Article 640 covers the equipment and wiring for audio signal processing, amplification, and reproduction equipment. As outlined in a portion of Sec. 640.6(B), "Cables installed exposed on the surface of ceilings and sidewalls shall be supported in such a manner that the audio distribution cables will not be damaged by normal building use. Such cables shall be secured by straps, staples, cable ties, hangers, or similar fittings designed and installed so as to not damage the cable."
Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.
