The little colored fuses are 12 volt ones and are listed on one of the white labels.
The breakers are usually marked on a separate list. The 30 amp on one end is the main and the others are 15 or 20 amps. One for the converter, second for the AC and third for the wall outlets. There may also be ones for the hot water heater and/or refrigerator.
One way to find out is turn everything one and flip them on one at a time.
Can't read the labels on your picture. Oh, and they may have labeled them incorrectly.
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