I am just currious if there is any protection from a short(tank spill) built into the current design(in the Inverter,ect..) or is this something that would need to be added in the form of a GFCI wall outlet on the battery box. I have one currently on the wall that is used for my tank now, but if I hook this backup unit upto it, my assumption is that even if it where to trip, the battery is still supplying power to it's battery box outlet reguardless.