Dockside 30A to 15A Adapter with GFIC - Provides safer hook-up to 30A dockside power - Provides protection against harmful electric shock - Reduces the possibility of fire - Offers protection for up to 3 attached tools - Corrosion resistant and rainproof rated for outdoor use - GFI Trip Level of 4-6 mA - Can also be used for other outdoor, harsh environments such as construction sites or wherever ground fault protection is desired. - Total load of attached tools must not exceed 15 amperes at 120 volts RMS, 60 Hertz or 180 Degrees watts. NOTE: A Ground Fault Circuit Interrupter (GFIC) limits the duration of an electrical shock to a period considered safe for healthy people. It does not prevent electric shock. This device does not protect against electric shock due to contact with both circuit conductors or a fault in any wiring supplying this device.