The ActiveStart Marine product is rated for 115VAC and works out of the box for shore power pedestal and ANY sized generators. Plug it in and Go! For other applications use our provided app to select other configurations for optimal performance. Its 30 amp rating allows for your AC to run along with other appliances with 2100 joules of surge protection included which is a must at some marinas where the power fluctuates often sending surges down the lines.