What is the calculated minimum height (top-to-bottom) for the specified pull box dimensions?

To determine the minimum height of a pull box based on its dimensions, it's necessary to adhere to applicable electrical codes and standards. The minimum height typically ensures safe and effective access for maintenance and operation, and it often accommodates the necessary wiring and equipment configurations.

In this case, "33" is derived from the prescribed guidelines that dictate how high a pull box should be to ensure sufficient space for conductors, as well as compliance with safety regulations. This height is often measured from the bottom of the pull box to the top, ensuring that there is adequate room for the entry and handling of wires without interference.

Additionally, choosing 33 as the minimum height might reflect considerations for working space, accessibility, and the prevention of potential hazards associated with lower installations. While other height options may not adequately satisfy the requirements set forth in the code, the choice of 33 ensures that both accessibility and safety standards are upheld effectively.