Once connected to an outside power source the power coming into your unit is routed through RV electrical systems and distribution centers. The distribution center is where the fuses and circuit breakers are located and where the power is rerouted to the appliances and the converter for 12 volt electric sources.
Though most are similar, RV electrical systems can vary among different units. To get a better idea of the type of RV electrical systems used in your unit, take a look inside the distribution center. In there you will see the circuit breakers that operate the air conditioner, microwave and refrigerator. You will also see the 12 volt system that operates the stove and lights on the inside of the unit.
If there is something not working properly that is hooked up to RV electrical systems it is possible to conduct some quick diagnostics to determine the cause of the problem.
When self-diagnosing an issue with RV electrical systems you will want to start by checking the circuit breakers. Flip the breakers on and off checking to ensure they are crisp and not sloppy. Look for any signs that the breaker is blown. This means it will not reset and stay up. Check all breakers and replace any ones that appear blown.
On the 12 volt side of RV electrical systems you can diagnose the electrical problem by using a meter and testing each fuse connection to ensure there is enough power going through each one.
The biggest difference between newer and older distribution center models is the location within the RV and how is set up. Also, the 12 volt converter is not located with the distribution center. It may be located in a different area of the RV.
Once you have taken a look at the electrical system, you will be able to further determine where the power issues are coming from.