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06-28-2018, 06:08 AM
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#1
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Installing 4 6Volt house batteries tomorrow.
Hi,
Tomorrow I will be installing 4 lifeline gpl 4ct batteries in my Itasca Latitude.
I will be getting Napa to make up 2awg cables for me.
Am I better off putting the batteries in place and measuring the cable length needed or getting longer cables and allow slack?
Thanks,
2008 Itasca Latitude 37G UFO
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2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-28-2018, 06:22 AM
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#2
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Senior Member
Join Date: Jul 2014
Posts: 35,317
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Find the longest jumper and make them all that same length, if possible.
Add a few inches just so they are not tight and tugging on the battery posts.
Sent from my VS835 using iRV2 - RV Forum mobile app
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06-28-2018, 06:44 AM
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#3
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Thanks Twinboat,
Should I go black and red or just one colour?
2008 Itasca Latitude 37G UFO
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-28-2018, 08:29 AM
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#4
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Senior Member
Entegra Owners Club
Join Date: Jun 2004
Location: Bayfield, Ontario
Posts: 5,442
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Red for positive and black for negative would be best or use coloured electrical tape at the ends so there is no confusion. For the series connections (positive to negative on a set of 6v batteries) I would make them only as long as necessary (with a little slack) but make both the same length. For the parallel connections on each 12v battery only make as long as necessary (with a little slack) but both the same length.
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Don & Gerri
2014 Entegra Anthem 44B
2014 Honda CRV Touring
1300W Solar, 1200AH LiFePO4 FMCA F443497
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06-28-2018, 09:01 AM
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#5
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Community Moderator
Monaco Owners Club
Join Date: Jul 2016
Location: Central, Arkansas
Posts: 11,202
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You don't want them to be short but if they are too long they can be hard to handle also. Get a piece of rope and snake it between the posts. Use that for your measurements and don't forget the terminals take up an inch or so on each end.
__________________
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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06-28-2018, 09:17 AM
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#6
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Thanks,
Best to install them in the bay first so. Great idea about using rope.
2008 Itasca Latitude 37G UFO
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-29-2018, 08:02 AM
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#7
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Hi,
My coach is not back from Big Foot leveling yet. I am hoping to get it back tonight or tomorrow.
I lined up the batteries as they qould go in the bay and the longest cable run is 12 inches.
Should I go with 16inches or 18inches?
2008 Itasca Latitude 37G UFO
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-29-2018, 07:51 PM
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#8
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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My best buddy John installed the batteries, he is a physicist and an amateur electrician. The shunt is mounted to wood. I still got to hook up my solar charge controller.
Payment was my old Progressive 30 amp EMS and Trimetric for his TT.
I managed to mount the Victron inside the coach by using the hole that Big Foot had used to mount the new jacks.
2008 Itasca Latitude 37G UFO
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-29-2018, 08:04 PM
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#9
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Senior Member
Join Date: Jan 2015
Location: Prescott, Arizona
Posts: 3,564
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Quote:
Originally Posted by twinboat
Find the longest jumper and make them all that same length, if possible.
Add a few inches just so they are not tight and tugging on the battery posts.
Sent from my VS835 using iRV2 - RV Forum mobile app
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Why all the same length?
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'04 Newmar MADP, 1100w of solar, Rubicon toad
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06-29-2018, 09:01 PM
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#10
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Senior Member
Freightliner Owners Club
Join Date: Apr 2017
Posts: 237
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Are those batteries secured? It looks like they're just sitting on the floor of the bay without any type of tray, strapping, or hold-downs. You'll definitely want them secure - that's a lot of weight to have loose in the belly of your beast! :-)
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2008 Gulf Stream Yellowstone 40UL
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06-29-2018, 09:06 PM
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#11
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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They are not tied down, I need to figure something out.
Had to take a hacksaw to the existing tie downs as the bolts and nuts were badly rusted.
2008 Itasca Latitude 37G UFO
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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06-29-2018, 09:09 PM
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#12
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Senior Member
Join Date: Jul 2014
Posts: 35,317
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Quote:
Originally Posted by ByeTheWay
Why all the same length?
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Every wire has some voltage drop, although it would be slight, almost immeasurable, in short thick cables.
To keep every battery charging or discharging evenly, keeping the cables even lenghts is best practice.
It also looks better and easier to follow the layout.
Sent from my VS835 using iRV2 - RV Forum mobile app
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07-07-2018, 05:22 AM
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#13
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Quote:
Originally Posted by VoiceNinja
Are those batteries secured? It looks like they're just sitting on the floor of the bay without any type of tray, strapping, or hold-downs. You'll definitely want them secure - that's a lot of weight to have loose in the belly of your beast! :-)
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My mechanic reckins he can secure them with angle iron. Maybe he was thinking about a lip of some kind, I will ask him Monday.
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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07-11-2018, 03:01 PM
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#14
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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The mechanic is making up the same kind of tray and fastening used for OTR truck batteries.
Will post pics when its done.
After that I need to hook up the starting battery to my Victron and mount and hook up the solar charge contoller.
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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