What is the calculated minimum width (left-to-right) of the referenced pull box in inches?

The correct answer reflects the minimum width requirement for a pull box, which is crucial for ensuring adequate space for cable management and maintenance. The National Electrical Code (NEC) provides guidelines on the required dimensions for pull boxes based on the number and size of conductors being used, as well as the type of installation.

In this case, the minimum width is determined by the number of conduits or conductors that will be pulled through the box, as well as any additional space needed to accommodate bends and prevent cable damage. The width of 37 inches is specifically tailored to allow enough room for these factors while complying with safety and accessibility standards.

This width ensures that electricians have enough working room to pull cables without stress, which is critical for maintaining the integrity of the conductors and for overall safety during installation and maintenance. Thus, selecting 37 inches as the width not only meets the code requirements but also promotes best practices in electrical installation.