Electrician's Licensing Practice Exam

The correct answer is based on the guidelines established by the National Electrical Code (NEC) regarding the installation of light switches. The NEC typically requires that switches be installed at a height that is accessible and convenient for general use. This height is set at 48 inches from the finished floor.

This requirement ensures that switches can be easily reached by most users, including those who may not be tall. Installing switches at this height also adheres to accessibility standards, which aim to accommodate individuals who may have mobility challenges.

Other heights such as 36 inches might not provide the necessary accessibility for a wider range of individuals, while heights of 54 inches or 60 inches are generally too high for standard use. Thus, 48 inches strikes a balance between accessibility and practicality in residential and commercial installations.