Code Q&A: Bonding and Grounding of A/C and Refrigeration Equipment

NEC rules on bonding and grounding of roof-top A/C and refrigeration equipment

June 1, 2017

Q. Does the Code have any special requirements for grounding and bonding of roof-top air conditioning and refrigeration equipment?

Find the Answer

Ecmweb Com Sites Ecmweb com Files Uploads 2017 05 31 6 1 17 Q Aweb

A. Yes. Based on a new rule in the 2017 NEC, where equipment is installed using a metal raceway run exposed on a roof for air-conditioning and refrigeration equipment, an equipment grounding conductor of the wire type must be installed within the outdoor portions of metal raceways that use non-threaded fittings [see Sec. 440.9].

Www Ecmweb Com Sites Ecmweb com Files Uploads 2015 01 Ecm Mini Ad 2014

These materials are provided to us by Mike Holt Enterprises in Leesburg, Fla. To view Code training materials offered by this company, visitwww.mikeholt.com/code

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.