A receptacle installed outside on the exterior wall of a doctor's office building is required to be what?

For a receptacle installed outside on the exterior wall of a doctor's office building, it is required to be GFCI (Ground Fault Circuit Interrupter) protected. The reason for this requirement is primarily related to safety. GFCI protection is essential in outdoor applications because it helps prevent electric shock hazards that can occur due to moisture exposure. Outdoor receptacles are subject to various environmental conditions that could potentially lead to ground faults, making this safety feature critical.

In addition to GFCI protection, outdoor receptacles typically need to be weather-resistant to withstand elements like rain, but the core requirement focuses on GFCI protection when it comes to the safety of individuals using these outlets. This safety measure ensures that if a ground fault occurs, the device will quickly cut off power, protecting users from serious electrical shocks.

While weather resistance and surge protection are important considerations for outdoor electrical installations, the specific requirement in this context centers on GFCI protection due to the heightened risk of electrical hazards associated with outdoor environments.