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Marine inverters often trip marina GFCI or ELCI shore power breakers due to improperly separated AC neutral buses.1:29 When a boat’s AC panel splits loads between shore-power-only circuits and inverter-powered circuits, the system requires two distinct neutral buses.2:24 If these neutrals remain common on a single bus, the resulting imbalance between the hot and neutral legs triggers the marina’s ground fault protection, which typically trips at a five-milliamp threshold.3:04 This issue occurs across all inverter brands, including Victron, Xantrax, and Magnum models, rather than stemming from a specific manufacturer defect.4:24 Owners of vessels like the Bayliner Sedan Bridge 480 should verify their AC wiring configuration to ensure that inverter-only loads utilize a dedicated neutral bus separate from the main shore power neutral bus.3:33 Properly isolating these circuits prevents the leakage current that causes nuisance tripping at modern marina pedestals.4:44

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