Which of the following materials is recommended for pool deck wiring?

The recommended material for pool deck wiring is wiring methods suitable for wet locations. This is crucial due to the unique environmental conditions present around pools, where moisture is prevalent. The National Electrical Code (NEC) recognizes that areas around pools can be classified as wet locations, which means that any installed electrical wiring and devices must be specifically designed to withstand contact with water and prevent electrical hazards.

Wiring methods suitable for wet locations ensure that the insulation and materials used in the wiring can resist moisture ingress and maintain safety and functionality. These types of wiring are often rated for direct exposure to water, ensuring the electrical system will be safe around the pool area.

In contrast, while PVC piping is often used for various electrical applications, it does not inherently provide the necessary protection and rating for wet environments without appropriate wiring strategies, as well as conduits that may be metal. Metal conduits themselves do not ensure water-resistant capabilities unless they are properly sealed and installed, which might not be guaranteed in all scenarios around a pool. Therefore, using wiring methods specifically rated for wet locations is the best choice for ensuring safety and compliance with the NEC.