The recommended approach is to use a separate DC grounding electrode for PV arrays and frames, as this enhances protection against lightning and transient voltage. For lightning protection associated with grounding systems, refer to NFPA 780 and NEC 250.
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This guide provides a comprehensive overview of best practices for lightning protection and grounding in PV power plants, ensuring long-term safety, efficiency, and operational stability for solar developers, engineers, and facility managers.
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The strategic placement of SPDs helps to prevent lightning induced damage by either shorting or clamping the voltage, thereby minimizing the transient voltage that would otherwise be present at the equipment terminals.
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This publication provides technical guidance and design requirements for static electricity and lightning protection systems as well as related grounding systems for facilities and other structures.
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