What material should be used to install the feed to the wet niche fixture?

The use of rigid brass for the feed to a wet niche fixture is essential due to its durability, corrosion resistance, and ability to handle the environmental conditions typically found in wet locations. Wet niche fixtures are installed in areas exposed to water, such as pools or spa settings, where the electrical connections need to be secure and reliable to prevent any risk of electrical hazards. Rigid brass is non-corrosive and thus performs well in wet environments, ensuring a longer lifespan and reducing maintenance needs.

While plastic may seem like an option because it resists corrosion, it may not provide the same level of grounding and secure connection required in electrical systems that are often subjected to water exposure. Aluminum, though lightweight and resistant to corrosion, is not as robust as brass and may be less suitable for the high-stress environments typically present with wet niche fixtures. Copper, while an excellent conductor of electricity, can corrode over time in the presence of water and other elements, making it less suitable compared to brass for this specific application. Thus, rigid brass stands out as the most appropriate choice for ensuring safety and reliable performance for wet niche fixtures.