The practice is often very different from the principle. I’ve had a set top box that in the “off” state used 29 watts, 24 hours per day. In the “on” state it us

The practice is often very different from the principle. I’ve had a set top box that in the “off” state used 29 watts, 24 hours per day. In the “on” state it used 30 watts. In principle, it didn’t have to be so but it was.