What type of conductors should underwater luminaires be connected to?

Underwater luminaires should be connected to insulated copper equipment grounding conductors for safety and performance reasons. This type of conductor ensures that any stray electrical current or fault conditions can be safely redirected to ground, minimizing the risk of electric shock. The insulation on the copper conductors provides an extra layer of protection, preventing the risk of electrocution, particularly in wet environments such as pools.

Copper is preferred over aluminum because it has better conductivity and is more resistant to corrosion, which is crucial in underwater applications. Using insulated copper conductors also complies with electrical codes and standards that govern the installation of electrical equipment in wet locations, thereby ensuring that the installation is safe and code-compliant. This is especially important in commercial swimming pool settings where safety is paramount for users who may be in close contact with electrical installations.