This installation violates the requirement of 406.2(C) for receptacles used with aluminum conductors, which states “Receptacles rated 20 amperes or less and designed for the direct connection of aluminum conductors shall be marked CO/ALR.” It also violates the requirement of 404.14(C) for CO/ALR snap switches, which states, “Snap switches rated 20 amperes or less directly connected to aluminum conductors shall be listed and marked CO/ALR.”
About the Author
Joe Tedesco
Tedesco served the industry in many roles during his career. He was a director, senior electrical code instructor for National Technology Transfer, Inc. and American Trainco, Inc.. He was also a codes, standards and seminar specialist for the International Association of Electrical Inspectors and an electrical field service specialist for the National Fire Protection Association in Quincy, Mass. He ran his own business as an NEC consultant and is a Massachusetts licensed master electrician and journeyman electrician and certified electrical inspector (one and two family 2A; General 2B, and Plan Review, 2C). Tedesco also wrote articles for CEE News and EC&M (Code Violations Illustrated and What's Wrong Here?) for more than 15 years and helped launched the Moving Violations video series.
