Winches can usually only tolerate a 50% duty cycle under load and if operating at 480amps you are probably best to operate at about 20%, the generator is charging the whole time. . Every lift comes standard with a manual motor option, which includes a key switch and a toggle switch for convenient hands-on operation. However, for added convenience and flexibility, we highly recommend upgrading to our. . However you could put solar panels on your roof as a separate project. I See Electromagnetic Fields! Maybe your AC winch was starved for power by long thing wires. Assuming it is 120V, you could feed 240V into the wire at the house and convert to 120V at the winch.