When applying external power to fold wings, what position should the ext power switch be in?

When applying external power to fold wings, the external power switch should be in the "Reset" position. This setting is crucial because it ensures that the aircraft's systems are properly configured to initialize functions that may be required during the wing folding operation. In this mode, the system can momentarily interrupt the flow of power to safely perform resets or clear any fault conditions that could interfere with the wing folding process.

Using the "Reset" position allows the aircraft's systems to start fresh and ensure they are correctly synchronized for operations like folding the wings, which can help prevent potential issues during the process. Other switch positions, such as "On", "Off", or "Standby" would not achieve the same level of safety and reliability for executing wing movements, thus emphasizing the importance of using the "Reset" position for this specific procedure.