[beeje]

The way I see it, there should not be any high amp draw things on in your unit when it is plugged in. So breaker on or off should not matter.

My unit is stored in a pole building at home. When I return from a trip, I plug it in right away without turning the breaker off.

How many of us plug our units in at home ? I would bet most of us. How many of us are going to go through the trouble of going down into the basement (or where ever your panel is) to turn off the breaker. Go back to the rig and plug it in. Then go back to the panel to turn on the breaker. I would bet none or not many of us. To me that would be overly anal.