Key Lessons About Solar Connectors

Why solar connectors? Because connectors usually don’t get the attention they deserve. They are a key component of a solar system and hold an important function: to provide a low-resistance connection between solar modules and other components while maintaining their integrity under extreme weather conditions for more than 25 years. Crazy, right? A piece of…

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Combiner Box Inspection Checklist

We do a lot of solar PV and renewable energy asset inspections here at HelioVolta and SolarGrade! Every time we visit a site, we use the SolarGrade platform to guide our workflow and document our findings. Here are 17 things we look for every time we approach a combiner box: 1. Missing/Improper LabelImproper labeling can…

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Connector Findings from Hundreds of Inspections

Cross-Mating & Compatibility This is a huge problem in the industry. Since the MC4 type connection became the standard, lots of competitors created an “MC4 compatible” connector. For some years, the rules of compatibility were not fully clear or understood by the masses, and even today, not everyone is clear about it. Connectors get tested…

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Rapid Shutdown Devices and Safety

Solar PV system fires are rare, dangerous incidents with severe consequences. Regulations that reduce the risk of thermal events obviously make sense. But what if they have unintended consequences? The HelioVolta team has the combined experience of >500 PV system inspections and dozens of root cause analyses on thermal events. Based on our professional field observations, we…

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