For pull boxes, which of the following conditions applies when using cables entering the box?

When using cables that enter a pull box, it is essential that the box is appropriately sized to accommodate the cables within. The requirement that the box must be at least 8 times the outside diameter of the largest cable ensures that there is adequate space for the cables to bend and maneuver comfortably without causing damage or stress to the wiring. This sizing guideline is crucial for maintaining the integrity of the cables and promoting ease of access for installation and maintenance operations.

Additionally, this requirement helps to prevent issues such as overheating or excessive wear, which could arise if the box were too small and did not allow for proper cable management. Properly sized pull boxes facilitate effective cable organization and ensure compliance with safety and electrical codes, promoting a reliable electrical installation.