Hello. Sorry. I have limited electrical knowledge. It states the motor is a 16-24 volt DC. It also states it is 28 watts and draws 1.6 amps. I'm thinking about using a laptop power adapter to power it. They range from 16 to 20 volt DC output, about 50 watts and 3.5 amps. Would this be a safe adapter to use?

Also, most of these adapters have non grounded plugs, although I have seen a couple with a ground. Would it be safe to run the fan without a ground? I have seen all sorts of fans with and without grounds. If I were to utilize a ground, how can I do this? Can I simply wire the ground wire up to any part of metal on the motor? When would you need or not need a ground wire? Thanks