The first thing you need to do is identify what components operate on 120 volt power and what draws from the 12 volt dc system.
Rv 12 volt fuse panel.
Customer service techs december 8th 2015.
The 12 volt dc power goes to the lights switches and slides and to the controls of many appliances including the heater air conditioner and refrigerator.
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Thanks for visiting the rv repair club site and the opportunity to assist with your power requirement issues.
The biggest issue with older rv distribution panel models is that the converter is noisier which can be very distracting when running.
There is no resetting fuses on an rv distribution panel.
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Test both sides of the fuse for 12 volt power.
The fuses in older models protect 12 volt battery powered systems which power lights roof vents water pump and several of the appliance on the lp mode of operation inside the coach of the rv.
Determine which fuse is for the appliance circuit fuses are normally labeled and find a suitable ground for the 12 volt test light.
If a fuse is bad it will appear burnt a little on the inside of it.
Fuses are not like breakers meaning once they blow they have to be replaced.
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The 12 volt output of your converter likely goes through two 30 amp fuses that feed your 12 volt fuse panel.
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Place a 12 volt meter at the bare metal section on the top of the fuse.