Parasitic load refers to those loads that can't be turned off, not those loads required for normal operation of any device. For example, the fridge has
no parasitic load because when it's turned off it's not drawing any power at all. Those loads that typically represent parasitic loads are the propane / CO detector which runs 24/7 unless the battery is totally disconnected, a radio memory circuit, and I suppose you might even include the television wall plate if you're in the habit of forgetting to turn it off. To eliminate those parasitic loads the solution is to install kill switches in these circuits, just as I've done, in my case also including the Winegard SignalPro which does otherwise draw power constantly unlike the standard passive Winegard wallplate which does not, as long as it's switched off.
