National Electrical Code Articles and Information

Code Quiz: Article 430, Part 6

Based on the 2020 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 430 provides the requirements for motors, including the hermetic motors that also have additional requirements covered in Article 440. Many other articles also may apply to a given motor installation. Article 430 is the largest article in the NEC.

1. Part VI provides the requirements for what part of a motor installation?

2. When must you provide separate overcurrent protection for conductors in this part of a motor installation?
   
3. How do you know whether to comply with Article 725 or Article 450 when installing the control circuit transformer?
   
4. In respect to question 3, what about transformers that don't fall under either Article 725 or Article 450? And how do you know which ones those are?
   
5. Yes, thcenter. If a transformer for the motor control circuit is in the controller enclosure, do you connect it to the supply side or load side of the motor control circuit disconnecting means?

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