Electrical Exam Term
Pull Box
A large junction box installed in a conduit run to facilitate the pulling of conductors through long or complex runs.
Detailed Explanation
NEC 314.28 specifies minimum pull box sizing based on conduit size and configuration. For straight pulls, the length must be at least 8 times the largest conduit trade size. For angle pulls (U-pulls), the distance must be at least 6 times the largest conduit plus the sum of all other conduit entries on the same wall. Pull boxes must be accessible and properly covered. They are essential in commercial and industrial installations with long conduit runs.
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Practice QuestionEasy
Which of the following best describes the concept of Pull Box?
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