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Commissioning Procedure After the installation of any PV system is completed and the inspection is done, the system will be ready to be plugged to the grid to transfer energy. That process is referred to as Commissioning the system. At the same time, the installer will hand the responsibilities to the owner or operator of the system. There are steps and requirements to commissioning PV systems that vary depending on system size and complexity of design. However, there are general guidelines that apply to most systems. Final checkout The system should be checked thoroughly before the commissioning starts. A highlight of the main electrical items to consider: All disconnects are in (OFF) position during the final checkout.? Installation matches the design documentation.? Conductors, OCPD, and disconnect are sized appropriately.? Compliance with all local AHJ and national codes (including NEC) is met.? Terminals connections and screws are securely tightened. ? A highlight of the main mech