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  1. National Electrical Code
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Code Q&A

Oct. 25, 2006
Do I have to use bonding jumpers around listed reducing washers?


Q. Do I have to use bonding jumpers around listed reducing washers?

A. No. According to the UL Guide Information for Electrical Equipment (White Book), listed metal reducing washers are considered suitable for grounding. This information can be found in section QCRV (Outlet Bushings and Fittings) of the UL White Book.

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.

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