National Electrical Installation Standards

Standards as High as Your Own

Tuesday, September 5, 2017


Charlie, Great work with the code question of the day.

Can you let me know if we are allowed to use clear tap connectors to wire 480 volt motors 5 HP and above?

Respectfully Submitted,

Angelo Sciandra



Hey Angelo thanks for your question and the compliment. Article 430 does not have details on specific types of methods or products to be used for motor terminations. Section 110.14 has general requirements for electrical connections. Several manufactures make "clear tap connectors" and they are not prohibited from being used for motor terminations but might be too large to fit in motor terminal housings.  Some manufactures have products that are specifically designed for motor terminations which can help facilitate future motor repair and replacements, Check with the manufacturer to determine if the connector you are considering is intended or suitable for motor terminations and as always follow the instructions provided including any torqueing values.

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ABOUT CHARLIE: Charles M. Trout, better known as Charlie, was a nationally known NEC® expert and author. He served on several NEC® technical committees and is past chairman of CMP-12. In 2006 Charlie was awarded the prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development, and technical training. Charlie was also a member of NECA’s Academy of Electrical Contracting. Charlie’s experienced team of industry experts keep the CQD dialogue and discussions active and informative in the spirit of the man himself, as he wanted.

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