Hello Everyone I'm new here and need some input from others. 2013 Heartland Landmark 40' 5th wheel. Just to be on the safe side the campground replaced the complete electrical box today (Licensed Electrican). Power is golden and grounds are all good. My shore power shuts down all at once for no reason. Then it comes back on 15 / 20 minutes later. This seems to be happening only when the air conditioners are running. If I turn of the air conditioners this process does not happen. I'm really confused on this one. Any and all help would be greatly appreciated. Thanks Mark