[Festus2]

I am surprised that your dealer or whoever you bought it from did not show you where the converter is located during your pre-delivery inspection and walk-through. In most RV's, it is situated at floor level in fairly close proximity to where your 110V shore power comes into your unit. When plugged in, you might hear a hum or a fan noise coming from it when certain lights are turned on.
It probably has a dark, vented metal-hinged cover which, when opened, will reveal fuses and breakers. There should be labels indicating which circuit(s) correspond to the various breakers and fuses.