|
|
07-10-2015, 01:17 PM
|
#1
|
Junior Member
Join Date: Aug 2014
Location: st albert
Posts: 5
|
Battery 30 amp fuse melts
Fuse at Batts blows or melts regularly. Not consistent with the operation of an specific piece of equipment. Like the slide out or a heavy draw. Rv dealers are not sure why that fuse is even there. The 2 heavy gauge black wires that connect to this fuse line lead to the main breaker panel. Looks like one wire connects to the back of the panel in such a way that the next thing in line would be a reverse polarity 20 amp fuse. Any help or clues would be greatly appreciated.
|
|
|
07-10-2015, 01:20 PM
|
#2
|
Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
|
Double-check your connections to insure you don't have reversed polarity somewhere.
Then look for chaffed, rodent-chewed or just plain shorted wiring between the battery and the converter or other direct connected system.
Check that the breakaway plug is properly seated.
__________________
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!
|
|
|
07-10-2015, 02:00 PM
|
#3
|
Senior Member
Join Date: Oct 2014
Location: St. Clairsville
Posts: 225
|
The fact that that fuse is melting and not your converter pretty much answers the "why is it there" question. Mike has the right idea here. The other thing might be to pull all your converter fuses, plug in your batt fuse, then add the others in one by one until there is an issue. I would do that after checking what Mike387 referred to. That is a lot of draw to melt a 30 amp fuse rather than blow it.
|
|
|
07-10-2015, 02:26 PM
|
#4
|
Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,769
|
Be glad that fuse is there. It protects your electrical system and battery. You can also pull that fuse, to disconnect the “load” from the battery, as there are lots of parasite drains that will discharge your battery in about two weeks, if you’re not connected to shore power.
Number one thing that blows the fuse is a powered tongue jack, which reaches the end of travel.
If it is blowing for no apparent reason, I would start by following the wires from the battery to back to the converter box. Good chance you have a pinched, frayed wire somewhere, most likely within about 3 feet of the battery. I wrapped all my exposed wires on the tongue area in friction tape, for protection.
|
|
|
07-10-2015, 05:04 PM
|
#5
|
Senior Member
Join Date: Sep 2011
Location: King George
Posts: 2,761
|
The DC OUTPUT of the CONVERTER/CHARGER is 45-55 DC AMPS depending what model you have. The DC CURRENT coming out of the BATTERY is around 200AMPS for a short time. If your short to frame ground is close to the CONVERTER/CHARGER unit then BATTERY DC CURRENT will melt your CABLES between the BATTERY TERMINALS and the frame ground short. This is why you have a fuse real close to the battery - protects the cables and the battery... The frame ground short could also cause the battery to explode on you as well if it wasn't protected by an in-line fuse.
You might indeed have your battery terminals reversed... The for sure way to determine this is find the MARKED NEG or the symbol '-' on the battery case and make sure this is the cable coming from the frame ground.
Some folks just remembers that ground was on the left or right. Then they go get the same new battery and hook it up without looking. Then they find out the manufacturer has swapped the terminals on them after they blown all there fuses first...
Roy Ken
__________________
Roy and Carolyn
I claim Horse Creek Country in Southern Ill - Momabear is from North Texas
We live in King George VA
RETIRED DOD DOAF DON CONTRACTOR Electronics Tech 42YRS
"We're burning daylight" - John Wayne
2008 STARCRAFT 14RT OFF-ROAD POPUP with PD9260C and three 85AH 12VDC batteries
2010 F150 FX4 5.4 GAS with 3.73 gears - Super Cab - Towing Package - 2KW Honda EU2000i Gen
K9PHT (since 1957) 146.52Mhz
"We always have a PLAN B"
|
|
|
07-10-2015, 05:41 PM
|
#6
|
Senior Member
Join Date: Mar 2015
Location: Southern California
Posts: 572
|
I don't have an answer for you but we just returned from our very first trip with our new trailer and our fuse from the battery blew 3 times! Going right back to dealer for them to investigate.
__________________
2016 Jay Feather X254
2001 Ford Excursion 6.8L V10 4.30's
Equal-i-zer 1000/10,000 WDH
Previous TV: 2004 Ford Exedition w/ heavy duty tow package[/COLOR]
|
|
|
07-11-2015, 10:25 AM
|
#7
|
Junior Member
Join Date: Aug 2014
Location: st albert
Posts: 5
|
Blown fuse
Thanks for all the input guys. I will be checking all those things and will post the results
|
|
|
07-11-2015, 10:34 AM
|
#8
|
Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
|
If the fuse is actually melting as you describe I would suspect a loose or corroded fuse holder.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
|
|
|
07-11-2015, 12:47 PM
|
#9
|
Senior Member
Join Date: Feb 2012
Location: Friendswood
Posts: 917
|
Quote:
Originally Posted by tnchuck100
If the fuse is actually melting as you describe I would suspect a loose or corroded fuse holder.
|
Correct!!!
A fuse that is blown is a result of a heavy load or a short to ground.
A fuse that is melted is a result of a loose connection or to large of amperage fuse.
If it is melted then Solder in a new fuse holder and put dielectric grease into the cavity before inserting fuse.
Just my .02
Robert
|
|
|
07-11-2015, 01:05 PM
|
#10
|
Senior Member
Join Date: Jul 2010
Location: Central NY
Posts: 203
|
Quote:
Originally Posted by tnchuck100
If the fuse is actually melting as you describe I would suspect a loose or corroded fuse holder.
|
X2 I had a problem with this same 30 amp fuse melting - note it was not burning the fuse link, but the entire fuse would melt. The problem was a faulty fuse holder. Dealer gave me a new one and as soon as I changed the holder out with the new one, the problem was solved. Never blew a fuse in the remaining 2 years that I owned the rv. IMHO if the problem were a short, it would blow the fusible link not melt the plastic.
Worked for me, but I have been known to be wrong.
__________________
|
|
|
07-11-2015, 06:22 PM
|
#11
|
Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
|
Quote:
Originally Posted by dbphantom
Fuse at Batts blows or melts regularly. Not consistent with the operation of an specific piece of equipment. Like the slide out or a heavy draw. Rv dealers are not sure why that fuse is even there. The 2 heavy gauge black wires that connect to this fuse line lead to the main breaker panel. Looks like one wire connects to the back of the panel in such a way that the next thing in line would be a reverse polarity 20 amp fuse. Any help or clues would be greatly appreciated.
|
If that RV dealer doesn't know why that fuse exists DO NOT let that dealer work on your electrics!
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
|
|
|
07-13-2015, 05:30 AM
|
#12
|
Senior Member
Join Date: Sep 2014
Location: In a house
Posts: 1,000
|
Quote:
Originally Posted by tnchuck100
If that RV dealer doesn't know why that fuse exists DO NOT let that dealer work on your electrics!
|
For sure!
On trailers with electric brakes, doesn't the 12 volt battery also power these electric brakes? Could the 30 amp fuse be blowing due to a problem with the electric brakes?
__________________
2005 Jayco GreyHawk Class C
2007 Ford F150
|
|
|
07-13-2015, 05:38 AM
|
#13
|
Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
|
Quote:
Originally Posted by bucko
For sure! On trailers with electric brakes, doesn't the 12 volt battery also power these electric brakes? Could the 30 amp fuse be blowing due to a problem with the electric brakes?
|
When not towing the electric brakes are not energized. The breakaway switch wire connected to the camper battery is not supposed to be fused. It should be a direct connect to the positive terminal of the camper battery. So, no, the electric brakes are not causing the fuse to blow or melt.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
|
|
|
07-16-2015, 01:45 PM
|
#14
|
Senior Member
Join Date: Mar 2015
Location: Southern California
Posts: 572
|
Quote:
Originally Posted by Country_Mouse
I don't have an answer for you but we just returned from our very first trip with our new trailer and our fuse from the battery blew 3 times! Going right back to dealer for them to investigate.
|
Dealer just called us. They ended up replacing the 30 amp main fuse with a thermal reset breaker. It was their opinion that the fuse there is insufficient.
__________________
2016 Jay Feather X254
2001 Ford Excursion 6.8L V10 4.30's
Equal-i-zer 1000/10,000 WDH
Previous TV: 2004 Ford Exedition w/ heavy duty tow package[/COLOR]
|
|
|
07-16-2015, 02:32 PM
|
#15
|
Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,844
|
Did they mention that if it trips, you have to wait for it to cool before it resets?
__________________
Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
|
|
|
07-16-2015, 02:55 PM
|
#16
|
Senior Member
Join Date: Mar 2015
Location: Southern California
Posts: 572
|
Quote:
Originally Posted by norty1
Did they mention that if it trips, you have to wait for it to cool before it resets?
|
No, just briefly talked on the phone. Sounded good to me but what do I know...
After thinking about it wondering why it was getting so hot in the first place. Is the real problem solved?
So, how long does it take?
__________________
2016 Jay Feather X254
2001 Ford Excursion 6.8L V10 4.30's
Equal-i-zer 1000/10,000 WDH
Previous TV: 2004 Ford Exedition w/ heavy duty tow package[/COLOR]
|
|
|
07-16-2015, 03:11 PM
|
#17
|
Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,844
|
Quote:
Originally Posted by Country_Mouse
So, how long does it take?
|
A few minutes.
__________________
Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
|
|
|
07-18-2015, 09:04 PM
|
#18
|
Junior Member
Join Date: Jul 2015
Location: New Jersey
Posts: 21
|
Sounds like a bad connection creating resistance. Also your not connected to your trailer connection on your tow vehicle when this occurs are you?. Being plugged into AC and connected to tow vehicle at the same time can short things out. I didn't like the fuse holders and connections on our trailer so I mounted a weatherproof box with 2 circuit breakers and a master cut off switch next to the battery. Since doing this I've had no power issues.
|
|
|
07-19-2015, 04:52 AM
|
#19
|
Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
|
Quote:
Originally Posted by matt1751
Sounds like a bad connection creating resistance. Also your not connected to your trailer connection on your tow vehicle when this occurs are you?. Being plugged into AC and connected to tow vehicle at the same time can short things out. I didn't like the fuse holders and connections on our trailer so I mounted a weatherproof box with 2 circuit breakers and a master cut off switch next to the battery. Since doing this I've had no power issues.
|
Just to keep facts straight: If everything is wired correctly there is no problem with the tow vehicle connected while also connected to shore power.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
|
|
|
07-19-2015, 07:07 AM
|
#20
|
Junior Member
Join Date: Jul 2015
Location: Arvada
Posts: 12
|
I know that a bad connection will produce heat. I don't know what most of you do, but I packed mine with dielectric grease and tucked the fuse holder inside the battery box. The dealer just allowed it to be outside of the box where water spray and road salts would definitely cause issues with time.
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|