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SPD installation rules: – connecting conductors should be as short as possible; – the cross-sectional area of the SPD grounding wires should be at least 4 mm2; – it is not recommended to ground the SPD on a DIN rail. The first video in the series • Where to install the SPD in the panel? You can see the answers to popular questions about SPDs here • SPD. Answers to popular questions Choose a SPD https://clck.ru/V2sAE