Code Q&A: Flexible Cord Requirements for Waste Disposal Unit

Jan. 27, 2022

Test your knowledge of the NEC.

Mike Holt

Courtesy of www.MikeHolt.com.

Based on the 2020 NEC.

Q. What are the Code requirements for using a flexible cord to connect an in-sink waste disposal?

See answer below.

A. Specific Appliances [422.16(B)]

A flexible cord is permitted for an in‑sink waste disposal if:

(1) The flexible cord is at least 18 in. in length and no longer than 3 ft.

(2) The receptacle is located to protect the flexible cord from damage.

(3) The receptacle is accessible.

(4) The flexible cord has an equipment grounding conductor and is terminated with a grounding-type attachment plug.

Kitchen cabinet arrangement highlighting plug in appliances under sink area

Exception: A listed appliance distinctly marked to identify it as protected by a system of double insulation is not required to be terminated with a grounding-type attachment plug.

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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.