This annual solar O&M site visit checklist guides subcontractors through a complete inspection of PV systems. It captures site details, access, and equipment specifications, then walks through racking, modules, wiring and connectors, inverters, DC and AC combiners, and monitoring equipment. It includes interconnection checks, conduit and wiring condition, and thermal imaging of key components. Electrical performance testing covers Voc, Imp, irradiance by string, and anti-islanding verification, with documentation of inverter parameters and any faults. Use it to record findings, photos, recommended actions, and string test results for reliable, compliant operation.
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