Which of the following statements is true regarding receptacles used in swimming pools?

Receptacles used in swimming pools must be rated for use in wet locations due to the high moisture and potential water exposure in these environments. The National Electrical Code (NEC) emphasizes the importance of using equipment specifically designed to withstand conditions where water is present, which is crucial for ensuring safety and preventing electrical hazards.

Receptacles not rated for wet locations may not be able to handle the environmental conditions typical of swimming pools, which could lead to malfunction, damage, or increased risk of electric shock to users. This requirement aligns with safety standards to protect both equipment longevity and user safety.

The other statements do not hold true within the context of the NEC; for instance, receptacles in such areas indeed require ground fault protection, are subject to specific material requirements for safety, and must adhere to relevant codes to ensure proper installation and usage.