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Wednesday, November 8, 2023

Question:

Hi CQD, why does EMT have to be offset when going into a box? Thanks, Jayden Nolasco
A

Answer:

Hello Jayden, there is no NEC® requirement for using a box offset in EMT when entering a box. However, there are supporting and securing requirements in Section 358.30(A)&(B). It could be difficult to use a traditional EMT strap to securely fasten EMT within 3ft of a box, especially larger sizes, without first bending an offset to accommodate entry into the box. Additionally, Section 300.10 requires metal raceways, and metal enclosures to be mechanically joined together to provide effective electrical continuity, without an offset the connector may not seat properly in the box opening, making it difficult to comply with this Section. Lastly, Section 110.12 requires installations to be done in a neat and workmanlike manner, using a box offset when installing EMT into a box, is one example of mechanical execution of work.

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CHARLIE TROUT: 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. Even though Charlie passed away in October of 2015, his work continues in spirit. NECA continues to maintain this question forum for its many subscribers in memory and recognition of all his significant contributions to making the NEC what it is today.

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