For swimming pool installations, grounding and bonding terminals must be what for direct burial use?

Grounding and bonding terminals intended for direct burial use in swimming pool installations must be listed. This means that these terminals have been tested and certified by a recognized testing laboratory to meet specific safety standards suitable for underground installation. The listing ensures that the equipment is reliable and safe for use in that particular environment, which is crucial given the moisture levels and potential for electrical hazards associated with swimming pools.

Using listed terminals provides assurance that they can withstand environmental factors such as water, soil conditions, and potential corrosion over time. These products have undergone rigorous testing and evaluation to ensure they perform safely and effectively under the conditions they will encounter when buried. Therefore, selecting listed grounding and bonding terminals is essential for compliance with electrical codes and maintaining a safe swimming pool installation.