Which fitting would you use to transition from conduit to a box?

The choice to use a box connector is appropriate because it is specifically designed to create a secure and safe connection between conduit and an electrical box. Box connectors provide a means of firmly attaching the conduit to the box, ensuring that electrical wiring can be properly routed while also maintaining the integrity of the installation.

Box connectors come in various designs accommodating different conduit types and sizes, making them versatile for various applications. They also help maintain the necessary grounding path and can effectively protect the wiring from physical damage, providing strain relief.

In contrast, other fittings such as a reducer, elbow fitting, or conduit hub serve different purposes. A reducer connects different sizes of conduit but does not attach conduit to a box. An elbow fitting allows changes in direction of the conduit run, but it wouldn't facilitate a direct connection to a box. A conduit hub allows for joining sections of conduit but is not intended for connecting to a box. Thus, for transitioning from conduit to a box, a box connector is clearly the best fitting to utilize.