Code Quiz: Article 409
Based on the 2017 NEC
Questions and answers written by Mark Lamendola, who has worked as a master electrician, electrical inspector, and design engineer. Mark is an IEEE Senior Member, and the Code article author for Codebookcity.com. Since 1996, he has been writing National Electrical Code articles for electrical trade magazines and has an extensive portfolio of hundreds of NEC articles.
Article 409 provides the requirements for industrial control panels intended for general use and operating at 1000V or less.
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