Have an electrical issues

I have a Heartland mallard idm312 and we're having electrical issues with all our outlets and the AC is not kicking on everything is getting power but the outlets and the AC and lights will not work plugged in to 50amp I have already checked the plug and breakers and fuses have all been tested gfi outlets is not triped but not a single outlet is working and ethier is the AC anybody ever run across this or might have a solution

Have you used a multimeter to check the voltage on both + legs at the pedestal?
Also do not rely on a visual when checking the breakers. Turn them off then back on.

Peace
Dave

The AC circuit breaker panel is the center and main distribution point of your RV's AC power system. If you are comfortable with working around (testing) AC power, then remove the front trim panel from your breaker box by removing the 4 screws at the corners of the breaker box front trim.
Do not touch any metal surfaces (especially wire conductors) with your bare skin. The best testing device is an electronic multimeter set to measure AC volts up to about 300 volts. Second best is a non-contact live AC voltage non-contact "sniffer" device. The power from the shorepower / or generator comes INTO the big mains breaker(s) on big wires, and is distributed on conductive rails underneath the individual branch circuit breakers, out the connect wires to the AC power loads. You can measure the voltage going out to the AC loads by applying the multimeter or non-contact voltage tester. Work your way from where you DO measure voltage to where you don't.







a

If you have a Transfer switch open it and inspect the lugs for tightness. I periodically check mine and tighten them up.

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Isn’t yours a 30amp system? As stated above, check you converter or try a step down plug.