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04-05-2015, 07:53 PM
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#1
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Member
Join Date: Apr 2015
Location: Ottawa
Posts: 41
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What size of inline Fuse at Battery?
I just bought a previously owned Jayco JayFlight 32 BHDS. In troubleshooting why I wasn't getting power from battery; I discovered that there is an in-line fuse at the battery. Can someone tell me what size of fuse should go in here?
I asked a sales guy at local RV dealership but didn't get a confident feeling in his answer.
Bill
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04-05-2015, 08:31 PM
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#2
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Senior Member
Join Date: Jul 2014
Location: South Texas
Posts: 166
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30 amp on mine...unsure if its the same but most likely is.
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2014 Ram 2500 Laramie, 4X4 CC, 6.4 Hemi, 3.73
2015 Jayco White Hawk 28DSBH Summit Edition
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04-05-2015, 08:43 PM
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#3
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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If your TT has 30 Amp service (plug) then I'd expect a 30 A fuse.
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Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
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04-05-2015, 08:51 PM
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#4
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Member
Join Date: Apr 2015
Location: Ottawa
Posts: 41
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Thanks.
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04-08-2015, 04:26 PM
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#5
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Member
Join Date: Jun 2012
Posts: 49
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Quote:
Originally Posted by RedHorse1
If your TT has 30 Amp service (plug) then I'd expect a 30 A fuse.
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With all due respect, the 30 amp service plug (AC) has nothing to do with the inline fuse at the battery, which is there to protect overload and protect the wire as well. These wire are rated for a certain DC capacity before they start heating up. I would expect the fuse to be proportional to the wire used between your converter and the battery. You can tell based on the AWG # printed on the wire itself. I would expect it to be a 8 AWG, which can go up to 30 amps at 15 feet (which is probably the length you have between the battery and the converter.)
So yes, 30 Amps sounds about right, but in doubt, always go with lesser fuse size. Changing a blown fuse is much cheaper than the hazard of having an overloaded wire catch fire.
Take a look at:
Amps and Wire Gauge - 12V Circuit
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04-08-2015, 04:52 PM
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#6
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Senior Member
Join Date: Jan 2015
Location: Loris
Posts: 253
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On our previous TT, I had a problem with the fuse "holder" getting hot, to the point that it was distorting. The wire that came with the fuse holder was only at best 12 ga., and it was spliced into a #8. I ended up going to an auto parts store and getting a 30 amp "Maxi-fuse" holder, which had #10 wire on it. Same protection, just a bigger fuse physically so it had more contact area. I put it in with crimp style butt splices and heat shrink tubing. That solved the heating problem. Some of the things they do at the factory really makes you wonder.
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Randy, Karen & Abby (Pom-a-Poo)
2014 Eagle HT 27.5RLTS
2015 F250 Super duty 6.2L full trailering pkg.
Loris, South Carolina.
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04-08-2015, 05:15 PM
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#7
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Member
Join Date: Apr 2015
Location: Ottawa
Posts: 41
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Thanks Jfguay2. I will head out to camper this weekend to try and determine the wiring size. In meantime, can you (or anyone) tell me how to identify where the converter is so that I may measure the distance between it and the battery.
Thanks
Bill
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04-08-2015, 06:28 PM
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#8
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Member
Join Date: Jun 2012
Posts: 49
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Quote:
Originally Posted by wbarnes
Thanks Jfguay2. I will head out to camper this weekend to try and determine the wiring size. In meantime, can you (or anyone) tell me how to identify where the converter is so that I may measure the distance between it and the battery.
Thanks
Bill
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I tried to look it up online but could not find it. You should have no problem locating it though, as it is together with the breaker panel where AC comes in on one side, and there are DC fuses on the other, along with the converter and so on. The converter is basically converting 120v into 12v when plugged into shore power at the same time as it charges up the battery. I would be surprised if any converter Jayco puts in currently outputs more than 30 amps when charging the battery, but with the 30A fuse, that would be the limit anyhow.
I have just taken a look at mine, and mine is also a 30A with an #8 AWG wire. Would not be surprised that is standard on many Jayco's. Mine's a 2011 X213.
Good luck!
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06-06-2016, 06:58 PM
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#9
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Junior Member
Join Date: Jun 2016
Location: Fort Washington
Posts: 1
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Hi, I'm having almost the same issue with my trailer. I have a red 10awg wire (coming about 14 feet from the converter to the battery box at the front) tying into a yellow 12 awg wire at the end (about 4-6" long) with fuse holder. I was on another forum and some said it should use a 20amp fuse and others said its ok to go with a 30amp fuse. What is your opinion on this? I have a photo but don't see how to attach it here.
Thanks,
Robyn
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06-06-2016, 08:03 PM
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#10
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Senior Member
Join Date: Dec 2014
Location: FL
Posts: 11,281
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Welcome to the forum.
If you post info on the year and model of your trailer, maybe someone with the same trailer would be able to help.
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SOLD:2015 Jay Flight 27RLS, GY Endurance (E), Days: 102 '15, 90 '16, 80 '17, 161 '18, 365+ '20
SOLD: 2006 Ford F350 PSD, 4WD, CC, LB, SRW, Camper pkg., 375,000mi
Full timing: Some will think you're crazy, some will be envious, just enjoy the freedom!
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06-07-2016, 07:52 AM
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#11
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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Just for the heck of it I went and checked my fuse holder and it said 30 amp max..
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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06-07-2016, 08:29 AM
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#12
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Senior Member
Join Date: Mar 2015
Location: Abingdon
Posts: 6,177
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Yes, it's a 30 amp.
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2013 Jayco Eagle 328 RLTS
2021 Keystone Montana 3121RL
2013 F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Equal-I-Zer™ WDH & B&W Companion
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06-07-2016, 10:09 AM
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#13
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,851
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That may be the rating of the fuse holder, not what it's protecting! Check the manufacturers specs on the lift.
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 Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
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Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
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06-07-2016, 03:21 PM
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#14
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Senior Member
Join Date: Dec 2009
Location: Maplesville - Home Base
Posts: 3,059
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The fuse at my battery(s) is a 30 amp. The fuse as well as the fuse holder.
__________________
Ed
KM4STL
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50X, TST Systems 507 TPMS, RV Flex Armor Roof
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06-07-2016, 06:11 PM
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#15
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Senior Member
Join Date: Mar 2016
Location: Exeter
Posts: 151
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The fuse holder shouldn't matter, as long as it can take the current of the fuse in it. I have a sport 8 and I have a 30amp fuse at the battery
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2015 Nissan Frontier SV CC 4WD
2014 Jayco Sport 8
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