Full size fridge electric question...

[CADman_KS]

I have a question about how the full size fridge electrical works.

My understanding is that there is an inverter in there that powers the fridge when you're not on shore power.

But, when you're on shore power is the electrical feed for the fridge coming thru the main panel (the converter/breaker panel) or still thru the inverter?

Just wondering about the longevity of the inverter if it's being used all the time. Maybe they are more robust than I think....