Yes, the generator can get wet and damaged, and if the generator is still working it will function as usual even after an hour or two of light rain. But you must dry out first before moving its location again. The wet conditions can effect the generator performance. The wet conditions affect electric circuits, wires and cable that get in contact with moisture. If this wet cause power interruption or damage your electrical equipment then you will need to replace it immediately before any further disaster happens like property loss or fire occurrence.