Marinco Dockside 30A to Boat 15A Shore Power Adapter- GCFI The Marinco Dockside 30A to Boat 15A Shore Power Adapter with Groud Fault Circuit Interrupter GFCI is a dockside adapter that offers a safe hook up to 30A power by providing against harmful electric shock and reducing the possibility of fire. Can be used outdoors in hars environments. A GFCI limits the duration of an electrical shock to a period considered safe for healthy people. It does not prevent shock. Product Features Provides safe