I know most, if not all, devices used in AC wiring are not rated for DC. What would happen if, say a fuse, switch, lampholder, receptacle, incandescent bulbs, were used on a DC circuit at the same rated voltage (let's not worry about what it would do to appliances). is there an overheating issue? What about using a higher frequency AC (say 600hz instead of 60)
Thanks,
Josh