They are most likely on a GFI(ground fault interrupter) circuit. They have a small button in the middle of the outlet that has to be reset. Push the button on all GFI breakers and see if they work. Most likely one of them is outside the MH. Some times they disconnect for no reason and sometimes you have a problem. If they continue to disconnect then you have a short somewhere in that circuit, or a weak breaker. Some times they will not power the micro wave and a coffee maker or other appliances at the same time. I hope this helps.