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Common Ground Point with Isolated Saildrives | Ask The Expert with NIGEL CALDER

5 septembre 2026 · 3 min · 2K vues

Ce que couvre cette vidéo

Volvo Penta saildrives feature electrical isolation between the drive leg and the engine, which eliminates the traditional path to the water for AC grounding circuits.1:04 When replacing an older, non-isolated drive with a modern Volvo Penta unit, the AC grounding system loses its connection to the water.1:38 ABYC and ISO standards require restoring this grounding path to ensure safety.1:46 Owners should not bridge the engine to the saildrive leg, as this bypasses the isolation and triggers severe galvanic corrosion.2:51 Instead, connect the AC grounding system to an existing metal through-hull or a dedicated grounding plate.2:05 Additionally, install an Equipment Leakage Circuit Interrupter (ELCI) or Residual Current Device (RCD) on the AC side to protect against ground faults.2:23 Maintaining the saildrive's electrical isolation preserves the integrity of the unit while providing a safe, compliant path for AC grounding.3:08

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