no you got it wrong..lets not make it complicated . for simplicity lets say i have free 500w for 24/7 365
would it mine with it or take the profit by selling it back ?
I haven't complicated anything. if a machine is rated 500 watts. That means, if it runs for an hour, it will consume 500 watts. So that will be it for you for a day. 1 hour of mining with all other factor constant.