Over Voltage (OV) conditions can impact the performance and safety of solar installations. This article outlines a comprehensive approach to identifying and resolving OV issues, from pre-installation to post-installation troubleshooting.
1. Pre-Installation Site Survey
During the pre-installation site survey, it is crucial to identify potential OV issues early. If OV is detected at this stage, immediately initiate the process of creating a LUMA case number. Having this case number readily available will streamline the M2 submission process.
2. Troubleshooting OV After M1 Submittal
If the site was not OV until after the installation, or OV was not identified until M1 submittal, a thorough review of the project is required. It is possible the installation caused the OV condition. Pay close attention to the following aspects of the interconnection:
Terminations: Incorrect installation of "c-clamps" and conductors with broken copper strands can significantly increase resistance, leading to elevated voltage.
Wire Insulation: Pinched wire insulation in terminals can also contribute to voltage increases.
Torque Settings: Both over-torqued and under-torqued terminals can play a role in OV. Ensure all terminals are torqued to the manufacturer's specifications.
If, after these checks, no visible errors are found, proceed with troubleshooting in collaboration with Generac. They can assist in confirming whether the cause of the OV is faulty equipment.
3. Persistent Over Voltage and Customer Support
If OV persists after implementing the above troubleshooting steps, guide the homeowner to file a Voltage Fluctuation claim. This claim can be submitted on the LUMA website or at one of their Customer Service Centers. The homeowner will need to present their government-issued ID for this process.
4. Documentation and Submission
Upon receiving the LUMA case number, ensure it is uploaded to the portal when submitting for M2 review. This documentation is essential for tracking and resolving the OV issue effectively.