What is the minimum height for outlet boxes above the finished floor in dwellings?

The minimum height for outlet boxes above the finished floor in dwellings is set at 12 inches. This requirement is established to ensure that electrical outlets are installed at a standard height that is accessible and practical for everyday use. Placing outlets too low could make them prone to damage from foot traffic or furniture, while positioning them higher than 12 inches can make it difficult for users to reach them comfortably.

In residential settings, the standard of 12 inches above the finished floor provides a good balance between accessibility for plugging in devices and protection from potential hazards. This height is consistent with wiring codes to promote safety and usability, ensuring that the electrical systems function efficiently in various environments throughout a home.

The other options, such as 6 inches, 18 inches, and 24 inches, do not meet the commonly accepted standards and would either place the outlets too low or too high for practical use in day-to-day activities in a residential setting.