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Old 03-05-2016, 06:49 PM   #1
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Unhappy Electrical Issue 27RLS

Good Evening,
I went to hook up my battery in my trailer today and accidentally put the white negative wire to the positive side of the battery. It was only for a second but it blew out both 40 amp fuses in the fuse panel. I replaced those fuses and checked all the other ones and they are ok. I also checked the continuity of the fuse in the inverter and it was ok. I still have no power to anything other than my power jack and light in the front. Any advise, suggestions, something I am missing?? I would assume that blowing the fuses should have kept the inverter from getting damaged?? Or am I wrong to assume that??
Any help would be greatly appreciated. Thanks in Advance!
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Old 03-05-2016, 07:05 PM   #2
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Did you check the inline fuse by the battery to see if it was blown?
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Old 03-05-2016, 07:13 PM   #3
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That's what those 40a fuses are for...in case the battery gets reversed.
Sounds like your disconnect switch is off.
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Old 03-05-2016, 07:26 PM   #4
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If the disconnect switch was off then the fuses wouldn't blow would they?

Mine has an in line resettable circuit breaker in the battery hot wire just a couple feet from the battery. I've seen some that had a fuse at that location. Also, there are usually 2 fuses on the converter that should be checked. I don't know about the fuse on your inverter.
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Old 03-05-2016, 07:39 PM   #5
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There is a 30 Amp fuse right by the battery, it was ok and I have no idea if this unit has a resettable circuit breaker in the line. What would it look like?? I would have no idea where the disconnect switch is either as this is a new unit and I have not owned an rv before. Thank you for your help!
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Old 03-05-2016, 07:41 PM   #6
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Some, most?, with the Progessive Dynamic converter are wired to charge while the disconnect is off.
Whether it would blow the reverse polarity fuses with the disconnect off is unknown by me, but it seems plausible because if the disconnect was off you could still hook the battery up backwards and send a reverse polarity back direct to the converter
Thought I'd through it out there.
Sure sounds like it though if the electric jack is still working.
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Old 03-05-2016, 07:45 PM   #7
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Quote:
Originally Posted by 71iggy View Post
There is a 30 Amp fuse right by the battery, it was ok and I have no idea if this unit has a resettable circuit breaker in the line. What would it look like?? I would have no idea where the disconnect switch is either as this is a new unit and I have not owned an rv before. Thank you for your help!
Oh
If it was all working before then through my disconnect theory out the door.
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Old 03-05-2016, 07:48 PM   #8
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I'm sort of surprised that a Jayfeather doesn't have a disconnect
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Old 03-05-2016, 07:51 PM   #9
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Will a regular automotive fuse work to replace those 40 Amp fuses?? Or do I need a reverse polarity fuse??
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Old 03-05-2016, 07:52 PM   #10
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They are normal fuses.
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