Is RV electrical system AC or DC?

After understanding some basic common sense, we will know that there are actually two power systems in our RV, one is a 12V DC (battery) system, which supplies some DC loads, such as DC air conditioners, DC refrigerators, and USB chargers, 12V LED lights in the RV, etc. There is also a 220VAC or 120VAC power system (through an inverter) for some large electrical appliances, such as induction cookers, microwave ovens, ovens, multimedia audio-visual systems, etc.

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