The 8’ SAE Adapter Cable is designed to extend the length of a solar panels, included SAE duplex cable. The cable extension allows the panel to be installed further from the rooftop port. !!!WARNING!!! Please Ensure Correct Polarity When working with SAE cables and connectors, it is crucial to pay close attention to polarity to avoid potential damage or hazards. Improper polarity can lead to reversed electrical flow, resulting in ineffective charging, equipment malfunction, or even electrical shorts.