Limited power in 2004 38 ft monoco sahara Safari

Check the reset for your converter and or inverter one of them may have tripped.

Also on my RV there are two circuit breakers mounted near the slideout controls, one of these also provides protection to the converter. The circuit breaker is the automotive type small black plastic about an 1 1/2 long with a micro switch to reset and two wire connections.

And one or more of your GFCI receptacles may have tripped and is affecting the entire circuit.