What type of wiring methods should be used for PV equipment floating on water?

Wiring methods allowing for expected movement are essential for photovoltaic (PV) equipment floating on water because these installations are subject to dynamic factors such as wave action, thermal expansion, and potential movement due to buoyancy and environmental conditions. The NEC recognizes that safe and reliable electrical performance in such environments requires not just adherence to standard installation methods but specifically those designed to accommodate movement.

Using appropriate wiring methods designed for flexibility ensures that the connections remain intact despite any shifts or movements that may occur, which is crucial for maintaining the integrity of the electrical system and preventing potential hazards such as short circuits or disconnections. This type of wiring allows the equipment to function effectively while also ensuring safety and compliance with the NEC.

Other wiring methods, such as temporary wiring, standard wiring methods, or underground wiring methods, do not provide the necessary accommodations for the movement that can occur in floating installations. Therefore, selecting wiring methods that allow for expected movement is vital for the longevity and safety of PV systems situated in such unique and challenging environments.