What must be installed within 10 feet of an above-ground pool?

The correct response to this question is that a grounded receptacle must be installed within 10 feet of an above-ground pool. This installation is crucial for safety reasons, as it allows for the use of electrical devices, such as pool maintenance equipment or lighting, in proximity to the water. A grounded receptacle provides a path for electrical current to safely return to the ground, significantly reducing the risk of electric shock, which can be particularly hazardous around water.

In the context of safety regulations and codes, grounding is critical for any electrical installation near bodies of water, as it protects against electrical faults. Code requirements often dictate the use of grounded receptacles in such areas to ensure that any stray electricity is safely diverted.

Other options mentioned, while important in their own contexts, do not specifically meet the regulatory requirement for installation near an above-ground pool. For example, while a GFCI outlet enhances safety by cutting off power during a ground fault, it doesn't fulfill the specific requirement for a grounded receptacle. Similarly, additional lighting and surge protectors serve different purposes and do not address the immediate need for a grounded power source nearby. Thus, recognizing the necessity of a grounded receptacle in this scenario ensures compliance with safety codes and contributes to a safer environment around