Generac® 6343 Aluminum Power Inlet Box for Generators Between 5500W & 9000W, 30AUse for generator transfer switch installations where the transfer switch or load center is indoors & you wish to avoid running the generator cord through a window or door. Mount this power inlet box the exterior of the house or building & run wiring through the wall over to the transfer switch installation allowing the generator cord from the generator to be plugged into the power inlet box. 30A power inlet box works with generators between 5500W &