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Calculator limitations
Results depend on your inputs and the stated mathematical assumptions. They may not account for local weather, shading, conductor temperature, installation methods, surge currents, structural loads, or all code requirements. Verify equipment compatibility and installation requirements with a qualified professional.
Electrical and roof safety
Solar panels can produce dangerous DC voltage in daylight. Batteries can deliver high fault currents. Do not open live equipment or climb onto a roof based on information from this website. Use appropriately qualified professionals.
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