Electrical issue

[Jgtexas]

We keep our 2013 Keystone cougar in Galveston TX. Our entire electrical in the camper cuts in and out intermittently. While it was out. I verified the 240volts at the plug in the back of the camper and zero volts coming into the 50a breaker on the indoor panel. No breakers or GFCIs trip when this occurs. We did find some big mouse turds around last Fall. But we think we have gotten rid of him. Maybe the wire got chewed through? No breakers trip or even get hot during power loss.
Do I need to pull the whole belly down from the panel to the shore power plug to inspect the wire? Could it possibly be an inverter issue? Any help or advice is greatly appreciated.

[firestation12]

Since you seem to only be measuring for 240 volts at the 50 amp breaker and don't mention testing each phase at the 50 amp breaker to neutral or ground, it may be possible you have only lost one of the 2 power legs. Go back and take readings at the interior 50 amp breaker from each hot leg to either the neutral or ground. If you have 120 volts at either phase to ground, then yo have only lost one of the 2 hot legs. I'd also check the back side of the 50 amp female receptacle of the camper inlet.

[Jgtexas]

Am I supposed to have 240 at each leg? Not an Electrician but I thought each was 120 for a total of 240.i fid check the female in back. It looked prestine. Also all breakers sound crisp.

[firestation12]

You should have a 240 volt reading between the two poles of the 50 amp breaker. When you said you had 240 volts, I didn't understand that you had measured each leg as having 120 volts, then adding (not measuring) the two 120 volt legs to declare you measured 240 volts. So, let's start this again, do you have 240 volts present at the panel INSIDE the camper's electrical panel by taking a measurement between the 2 screws holding the wires to the 2 pole 50 amp breaker?? Did you measure the voltage from ONE of the 50 amp breaker's screws to ground?? What was the result of each of those test?? Do you have a transfer switch anywhere between the shore power entrance to the camper and the 50 amp breaker?? Seems unlikely mice could have chewed through a 6/3 with ground cable. Because you describe an intermittent electrical connection, you should be looking for a problem at all terminal connections.