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09-21-2019, 08:31 AM
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#1
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Junior Member
Join Date: Sep 2019
Location: MD
Posts: 3
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Batteries Showing Reverse P. upon install
I have a 1995 Fleetwood Southwind 38WB. I removed the batteries 6 months ago but before I did I took a few pictures.
Since then, phones have been replaced and pictures lost.
Had an electrician friend with 40 years experience reattach all the cables and he assured me that everything was good to go.
One small problem I am concerned about is the fact that when the 120 plug is plugged into the house outlet the Surge Guard is showing reverse polarity.
My friend didn't seem concerned about it and said to keep it plugged in to charge the 6-volt batteries.
I would appreciate any suggestions to get the polarity back to normal. Something is still wrong with the way the batteries are wired.
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09-21-2019, 08:59 AM
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#2
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Senior Member
Join Date: May 2017
Location: Vancouver Wash
Posts: 7,227
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Between two 6 volt batteries, pos goes to neg.....then the neg off 1st battery goes to ground and the 2nd batteries pos goes inside....you end up with 12 volts...
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09-21-2019, 09:07 AM
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#3
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Community Moderator
Monaco Owners Club
Join Date: Jul 2016
Location: Central, Arkansas
Posts: 11,290
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Reverse polarity on the surge protector has nothing to do with the batteries. The outlet or cord you are plugged into has the hot and neutral reversed. It should be addressed. An electrician that doesn't know a 120v reverse polarity issue can be a problem and should be fixed and isn't concerned about it is not much of an electrician and I wouldn't let him touch anything of mine. Also keep in mind that people that work on AC power may not know anything about DC power.
__________________
2004 Beaver Monterey Laguna IV
Cummins ISC 350HP Allison 3000 6 speed
2020 Chevy Equinox Premier 2.0t 9 speed AWD
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09-21-2019, 09:19 AM
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#4
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Senior Member
Join Date: Jul 2014
Posts: 35,439
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Yup, the house outlet or extension cord used is wired wrong. The surge guard is a 120 volt device.
When you wire the batteries wrong, big sparks fly and the converter/charger blows the reverse polarity fuses.
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09-21-2019, 09:36 AM
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#5
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Senior Member
Join Date: Jul 2018
Posts: 4,925
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Too many electricians ignore reversed AC polarity and they shouldn't. Mostly they do it because in a typical residential use - and presuming the rest of the wiring is correct - it presents little danger and more importantly, it passes current so the homeowner is happy.
With RVs sharing a common electrical service (same transformer) in a park or campground it only takes a couple of miswires to create a potentially hazardous situation. Have your electrician buddy figure out where this problem is and fix it.
As was mentioned in another reply this has nothing to do with your battery problem.
__________________
2005 Four Winds Majestic 23A
“To the world you may be one person; but to one person you may be the world.” - Dr Suess
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09-23-2019, 07:08 AM
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#6
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Junior Member
Join Date: Sep 2019
Location: MD
Posts: 3
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Thank you for all the responses.
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09-23-2019, 07:34 AM
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#7
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Senior Member
Join Date: Jan 2013
Location: Muskoka Ontario Canada
Posts: 3,142
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What are you using to plug into the house? Is it a proper rv plug? 30 amp, 50 amp. Who wired it. Are you using an extension cord? Something wrong with your house plug if the surge guard is showing reverse polarity. Sometimes people replace ends on extension cords, and don't know there is a proper place to put each wire in the plug in. In normal use, the cord will work even if the wires are backwards.
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 2000 coachmen santara 370 5.9 cummins isb
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09-24-2019, 09:46 AM
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#8
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,780
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Hi ! Welcome to IRV2! We're sure glad you joined the gang! 
Others have answered your question but I noticed you are kinda new on IRV2 and wanted to say hello!
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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09-24-2019, 06:47 PM
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#9
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Senior Member
Join Date: Aug 2016
Location: Payson, AZ
Posts: 1,282
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go to the hardware store and get a cheap ($5 or so) circuit tester that you simply plug into the outlet. it will show things like reverse polarity, open ground, open neutral. anybody that has been an electrician for 40 will have one, if not many. reverse polarity on the 120 volt line has nothing to do with the batteries.
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