EmerGen EGS107501G2KIT Switch 10-7501G2, Detailed Instructions, Pi30 Power Inlet Box, Flexible Conduit, Liqui Tight Fitting and 10-Feet Power Cord For use with any portable generator that has up to 30-amp output, nema L1430 Double throw rocker switches absolutely eliminate the possibility of power back feeding to the utility line or to your generator when power is restored 2 pole circuits allows 240-volt circuits - perfect for well or sump pump applications, if a two pole circuit is not needed, the tie bar can be removed to allow for two single pole circuits Can be installed indoor or outdoor - easily wires up to a nema 3R rainproof power inlet box (included) Transfer switch is compatible with all load centers and specifically approved with challenger, cutler hammer, ge, home line, siemens, square d and westinghouse load centers