Which protective device must be used for conductors under 15 amps per NEC standards?

The correct choice for protective devices to be used for conductors under 15 amps, according to NEC standards, emphasizes the critical function of Ground Fault Circuit Interrupters (GFCIs) in providing safety. GFCIs are designed to protect against electrical shock by sensing imbalances in electrical flow that could indicate a ground fault, often caused by water or other conductive materials. This is especially important in areas where moisture is present, such as kitchens, bathrooms, and outdoor locations.

In contexts where personal safety is a primary concern, such as with lower amperage circuits, the NEC emphasizes the use of GFCIs to prevent electrical hazards. They are considered essential for ensuring that circuits operating under 15 amps are safely protected from conditions that can lead to electrocution. While other protective devices like fuses, miniature circuit breakers, and molded case circuit breakers can provide overload and short-circuit protection, they do not address ground faults in the same way GFCIs do. Therefore, the focus on using GFCIs aligns with the NEC's dedication to safety in electrical installations, solidifying its role as the appropriate protective device for conductors at this amperage rating.