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02-11-2018, 08:16 AM
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#1
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Senior Member
Join Date: Jan 2018
Location: Mesa, AZ
Posts: 153
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Shore power question
I currently have both coach batteries removed to take to the shop and have the metal in my battery bay replaced due to rust and corrosion and have it hooked to shore power but there is no power to the coach. Do the batteries have to be installed and hooked up to have 110 power? I still have the chassis battery installed to start the engine but everything else is dead. Does the inverter switch have to be on? Thanks
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Dave & Vicki
1999 CC Allure 36 DTSG #30317
USAF Retired
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02-11-2018, 08:39 AM
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#2
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Senior Member
Join Date: Jul 2011
Posts: 1,144
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Most of the power using appliances, lights, etc. in the motor home use 12v power. That means they run on batteries. The inverter converts 120v to 12v DC. I'm not 100% sure your 110v sockets will work, but try them.
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2004 Tiffin Allegro 27.5 ft. P32 18,000 lb. GVW. 8.1 liter. Workhorse chassis built May 2002. 35,500 miles. 2012 Jeep Liberty Toad. RVi2 brake unit.
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02-11-2018, 08:47 AM
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#3
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Registered User
Join Date: Aug 2014
Location: western NC mountains!
Posts: 4,106
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I would think that your CONVERTER would still operate your 12v items, while plugged into Shore Power, even WITHOUT any batteries. Maybe your converter is turned off, it would only operate on 120v Shore Power, of course.
I would also think that your 120v outlets should work, regardless of batteries or not.
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02-11-2018, 08:52 AM
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#4
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Senior Member
Join Date: Aug 2015
Location: Oregon
Posts: 642
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I can't answer your specific question, but I did this same thing on my 2000 allure last summer. I was warned by others about welding on the coach. There are a few items that must be disconnected before welding. My buddy and I ended up making a drop in replacement so we didn't have to weld on the coach.
Best of luck!
http://www.irv2.com/forums/f112/rust...ts-333581.html
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02-11-2018, 08:55 AM
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#5
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Senior Member
Join Date: Jul 2005
Posts: 1,679
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Many converters use the batteries as a reference for supplying current. I.e., no batteries no current.
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Dale & Mark Bruss
13 Years Full-Timing Now with a 2016 Bounder 33C
40' Travel Supreme winter residence
Lots of RV Information at www.dmbruss.com
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02-11-2018, 09:20 AM
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#6
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Senior Member
Join Date: Jul 2014
Posts: 35,419
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If it has an inverter/charger it will not power up the 12 volts without a battery. They need about 5 volts just to turn on and a battery to regulate the output.
If it has a converter it will, that's what a converter does.
Don't let your inverter/charger run without a battery. That is why they typically don't have battery disconnect switchs on inverter/charger cables.
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02-11-2018, 11:01 AM
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#7
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Senior Member
Join Date: Jan 2018
Location: Mesa, AZ
Posts: 153
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Quote:
Originally Posted by John Jones
I can't answer your specific question, but I did this same thing on my 2000 allure last summer. I was warned by others about welding on the coach. There are a few items that must be disconnected before welding. My buddy and I ended up making a drop in replacement so we didn't have to weld on the coach.
Best of luck!
http://www.irv2.com/forums/f112/rust...ts-333581.html |
Now that's a great idea! do you happen to have the dimensions of the box that I could take to my welder? I am assuming you cut the old tray out with a saws all? probably save me some money also. Mine is a lot worse than yours was. Thanks
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Dave & Vicki
1999 CC Allure 36 DTSG #30317
USAF Retired
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02-11-2018, 11:11 AM
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#8
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Senior Member
Join Date: Jan 2018
Location: Mesa, AZ
Posts: 153
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Guess I'll just be happy with no power until I can put the batteries back in. definitely do not want to mess anything up, have enough issues as it is.
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Dave & Vicki
1999 CC Allure 36 DTSG #30317
USAF Retired
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02-11-2018, 11:26 AM
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#9
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Senior Member
Join Date: Jul 2014
Posts: 35,419
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Your lucky the inverter/charger didn't turn on, all of your red cables are laying on ground.
You need to tape up the + ends before starting the engine. Your alternator will get damaged if shorted thru the cross battery charging system.
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02-11-2018, 11:35 AM
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#10
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Senior Member
Join Date: Aug 2015
Location: Oregon
Posts: 642
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Quote:
Originally Posted by dhetrick2
Now that's a great idea! do you happen to have the dimensions of the box that I could take to my welder? I am assuming you cut the old tray out with a saws all? probably save me some money also. Mine is a lot worse than yours was. Thanks
Attachment 191932 |
Dave,
Let me look around and see if I can find the dimensions, I can't seem to remember where I put them. Yes we used a saws all and a grinder. We screwed in the new battery tray, it will probably out last the coach.
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02-11-2018, 11:41 AM
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#11
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Senior Member
Newmar Owners Club
Join Date: Jun 2012
Location: Spicewood Texas (West of Austin)
Posts: 4,514
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You can set your batteries on a bench temporarily and keep your 12V system active. I did this for 2 weeks while I was rebuilding my tray. I only used 2 of 8 of my new 6V batteries for this.
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Scotty and Kristen, Airedales Dagny and Wyatt
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison 4000, 8 Lifeline AGM's
2019 F250 King Ranch 4x4 Powerstroke - SOLD
2022 F350 DRW King Ranch 4 x 4
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02-11-2018, 02:11 PM
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#12
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Senior Member
Join Date: Jan 2018
Location: Mesa, AZ
Posts: 153
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Quote:
Originally Posted by twinboat
Your lucky the inverter/charger didn't turn on, all of your red cables are laying on ground.
You need to tape up the + ends before starting the engine. Your alternator will get damaged if shorted thru the cross battery charging system.
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No all the loose cable ends have black duct tape on them, probably couldn't see it.
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Dave & Vicki
1999 CC Allure 36 DTSG #30317
USAF Retired
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02-17-2018, 08:46 AM
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#13
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Senior Member
Join Date: Jan 2018
Location: Mesa, AZ
Posts: 153
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Quote:
Originally Posted by John Jones
I can't answer your specific question, but I did this same thing on my 2000 allure last summer. I was warned by others about welding on the coach. There are a few items that must be disconnected before welding. My buddy and I ended up making a drop in replacement so we didn't have to weld on the coach.
Best of luck!
http://www.irv2.com/forums/f112/rust...ts-333581.html |
So glad you made this post John, saved me some money and possibly some grief! Dave
__________________
Dave & Vicki
1999 CC Allure 36 DTSG #30317
USAF Retired
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