Code Q&A: Supply Side Bonding Jumper

April 10, 2019

Check your knowledge of terminology in the National Electrical Code.

Q. According to the NEC, what is a supply side bonding jumper (SSBJ)?

See the answer below.

A. The SSBJ is the conductor on the supply side of the service or separately derived system overcurrent protection device that ensures electrical conductivity between metal parts and the grounded conductor [Sec. 250.2].

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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.