NEC Commercial Electrical Practice Test

When making U pulls or angle pulls in a junction box, the distance between each raceway entry and the opposite wall must be at least how many times?

1. 4 times

2. 5 times

3. 6 times

4. 7 times

The correct answer is: 6 times

The correct answer is based on the NEC (National Electrical Code) requirements that dictate proper installation practices for raceways and wiring systems in junction boxes. Specifically, when making U pulls or angle pulls, the code stipulates that the distance between each raceway entry and the opposite wall should be at least six times the diameter of the raceway. This requirement is in place to ensure that there is sufficient room for the wires to maneuver and to prevent undue stress or damage to the conductors. This measurement is critical, as it helps maintain the integrity of the wiring while also ensuring that the box is not overfilled, which could lead to overheating or other complications. Sufficient space allows for proper bending of conductors, facilitating a safe and effective electrical installation. Understanding this guideline is essential for anyone involved in commercial electrical work, ensuring both compliance with the NEC and the safety of the installation.