Is a ground fault circuit interrupter suitable for outdoor use without any specific listing?

A ground fault circuit interrupter (GFCI) must be specifically listed for outdoor use to ensure it is safe and effective in protecting against electrical shock in wet or damp environments. The outdoor environment presents unique challenges due to exposure to moisture, which can increase the risk of ground faults. A GFCI that is not specifically listed for outdoor use may not have the necessary protective features to function correctly under these conditions.

Therefore, the correct answer emphasizes the importance of selecting a GFCI that is adequately rated for outdoor applications, as this ensures compliance with safety standards and provides the necessary protection in potentially hazardous environments. The listing serves as a confirmation that the device has passed specific testing to withstand outdoor conditions, including impacts from weather, moisture, and other environmental factors. This focus on safety is integral to ensuring that electrical installations are compliant with the National Electrical Code (NEC).