In one- and two-family dwellings, the primary protector bonding conductor or grounding electrode conductor for communications systems shall be as short as practicable, not to exceed _____ ft in length.
a) 5
b) 8
c) 10
d) 20
See answer and applicable Code reference
The correct answer is: d) 20
Article 800 covers communications circuits and equipment. Part IV of this Article focuses on the topic of grounding methods. As noted in the second sentence of Sec. 800.100(A)(4), "In one- and two-family dwellings, the primary protector bonding conductor or grounding electrode conductor shall be as short as practicable, not to exceed 20 ft in length."
About the Author
Mike Holt
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.