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Old 06-27-2012, 09:29 PM   #1
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Convertor blows battery 20 fuse

I have a WFCO-WF-8735P and it blows 20amp fuse which is battery circuit my battery voltage is below 10 volts and every time I plug in my shore power it blows fuse. Now I disconnect battery and hook up shore power it doesn't blow fuse. Is my battery the reason it's got a short in it somewhere the battery is only 1yr old deep cycle.

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Old 06-27-2012, 11:18 PM   #2
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20 amp fuse, doesn't sound like much for a battery charge circuit; but if this is a new problem then pull the battery and have it tested. Free at NAPA/Autozone etc.

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Old 06-28-2012, 09:59 PM   #3
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Looks like it was a low battery charged it back up and checked battery checked good put it back in camper and all is well no blown fuses yea
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Old 06-28-2012, 10:42 PM   #4
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Charger was pulling more than 20 amps trying to charge the battery. Appears that 20 amps isn't a heavy enough circuit for your setup unless the charger is bad or going bad.
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Old 06-28-2012, 11:36 PM   #5
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Which fuse is blowing? The converter is rated at 35 amps. If you aren't the original owner someone may have under fused it by mistake or it was the only one they had. If the battery is in a higher state of charge it won't blow the 20 or if you have lots of lights on some of the current may be going to those devices and won't blow the 20. Check the manual. I would put a 30 in its place based on looking at the converter schematic.
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Old 06-30-2012, 10:00 AM   #6
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Bought the camper new these are the original fuses called my service dept they said that the low battery was the problem been on shore power at campground in Branson now and no problems.

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