For installations accessible by forward reach, what mounting height is stipulated by the NEC?

The National Electrical Code (NEC) specifies that for installations that are accessible by forward reach, the minimum mounting height is set at 15 inches. This requirement ensures that appliances, outlets, and controls are accessible to all individuals, particularly those who may be in a seated position, thereby enhancing safety and usability in various environments.

The concept of forward reach relates to the distance a person can comfortably reach from a seated position, which is critical for ensuring accessibility. Mounting devices at or above this specified height allows for easy access while adhering to safety codes.

In the context of the other options, they do not meet the accessibility requirement defined by the NEC for forward reach installations. Heights lower than 15 inches could pose challenges to those who are unable to bend or crouch down comfortably, thus the code establishes 15 inches as the appropriate minimum height for ensuring equitable access.