Code Quiz of Day

Securing Rules for Metal-Clad Cable

May 28, 2015

Article 330 covers the use, installation, and construction specifications of metal-clad cable, Type MC.

Type MC cable containing four or fewer conductors, sized no larger than 10 AWG, shall be secured within ___ in. of every box, cabinet, fitting, or other cable termination.

a) 8
b) 12
c) 18
d) 24

See answer and applicable Code reference

The correct answer is: b) 12

Article 330 covers the use, installation, and construction specifications of metal-clad cable, Type MC. Securing and supporting requirements are outlined in Sec. 330.30. As noted in the first two sentences of 330.30(B), "Unless otherwise provided, cables shall be secured at intervals not exceeding 6 ft. Cables containing four or fewer conductors sized no larger than 10 AWG shall be secured within 12 in. of every box, cabinet, fitting, or other cable termination."

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.