What does "nonmetallic" refer to in pool electrical installations?

In the context of pool electrical installations, "nonmetallic" refers to materials that do not conduct electricity. This classification is particularly important in ensuring safety around swimming pools, where moisture is prevalent and the potential for electrical hazards exists.

Nonmetallic materials, such as certain plastics or composites, are used in various components like conduit, junction boxes, and other fittings. The use of nonmetallic materials minimizes the risk of electrical shock, as they prevent the unintended flow of electricity that could occur if water interacts with conductive materials.

Understanding the properties of nonmetallic versus metallic materials helps ensure compliance with safety standards set forth by the National Electrical Code (NEC) and protects individuals from electrical hazards in wet environments.