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06-07-2018, 04:57 PM
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#1
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Junior Member
Join Date: Jul 2017
Location: Minneapolis
Posts: 17
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Electrical connector
I was looking around the 2011 Passport this week and saw these connectors near the front of the trailer, behind the battery. I'm not having any issues currently, but they look a little worse for the wear.
They look like connectors/busbars? Wondering if I should replace them before I do start having issues, and if so, where to get replacements. I'm not an electrical guy per say, so I assume these have different ratings, etc.
Thank you
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06-07-2018, 05:19 PM
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#2
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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Those pictures are of DC circuit breakers. It appears in your first and second photo that the actual mechanism has fallen out of its protective plastic case. I'd question whether they are providing any circuit protection in the condition they appear to be in.
You can find the amperage rating on the container that it still mounted to the bulkhead or stamped into the metal plate on which the two terminals are mounted.
12VDC circuit breakers usually come in 20, 30, 40, 50, 60, 80 and 100 amp sizes. Typically RV's use a 40 or 50 amp breaker as the primary breaker and a 30 amp breaker as the secondary breaker. You should be able to identify which is which on your trailer by the information plate.
Keep in mind that DC circuit breakers are not "polarity sensitive, but the terminals are marked "BATT" and "ASSY" and must be connected properly when wired in series such as on an RV. Otherwise, you run the risk of not having proper protection at the second breaker.
You can purchase DC circuit breakers at any RV parts store or dealer accessory store, online at any RV parts website, Amazon, EBay or many auto parts stores. NAPA usually has them in stock at most larger locations.
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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06-10-2018, 06:00 PM
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#3
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Junior Member
Join Date: Jul 2017
Location: Minneapolis
Posts: 17
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I crawled around underneath looking for anything stamped or labeled near the circuit breakers and found nothing. My wife also looked, she sees everything!
Anyways, you mentioned an information plate, could that be elsewhere? Still trying to figure out what amperage to get to replace these.
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06-10-2018, 06:07 PM
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#4
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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The amperage is stamped either on the plate with the two terminals or on the "plastic or tin" can that houses the circuit breaker. It will be similar to what you see in this photo. The photo is a 20 amp BUSS circuit breaker. Yours will have the information somewhere on the actual device. You won't find it on a plate located elsewhere and there is no "Keystone schematic" to guide you. Carefully remove the circuit breakers from your trailer, use a damp rag and clean them. You should find the information stamped "somewhere on the device".....
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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06-11-2018, 03:08 AM
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#5
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Senior Member
Join Date: Mar 2015
Location: Southeastern Connectiut
Posts: 1,306
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One thing that I haven't seen mentioned so far is that one wire to the stud on the breaker will be 12v "live". Make absolutely sure to disconnect your battery, and unplug from shore power prior to working on the breaker.
Good Luck,
__________________
Pull Toy
Steve & Jan, Ava & Emma (Mini Schnauzers):
2016 F350 Lariat 4X4 Powerstroke CC/SB "PULLTOY V"
2013 Alpine 3535RE "MAGIC CARPET IV"
Proud Navy Vet!
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06-11-2018, 04:14 AM
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#6
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Junior Member
Join Date: Jul 2017
Location: Minneapolis
Posts: 17
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Thank you all!
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07-08-2018, 04:58 PM
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#7
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Junior Member
Join Date: Jul 2017
Location: Minneapolis
Posts: 17
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I'm finally getting around to replacing these. Got the new breakers. Does it matter which way the wires are connected? Obviously will connect the wires between the two breakers as they are, but as far as the copper or silver colored studs?
Are the nuts that are darker, look rusted the copper ones?
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07-08-2018, 05:16 PM
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#8
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,349
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If you look at the breaker it will be labeled “BAT” and “LOAD”
BAT gets the feed from power source and LOAD gets the line out.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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07-10-2018, 08:44 AM
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#9
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Junior Member
Join Date: Jul 2017
Location: Minneapolis
Posts: 17
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Thanks, one of them there is no casing around the breaker, totally exposed! Will trace the wires I guess.
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07-10-2018, 10:09 AM
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#10
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,757
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You could remove one wire from the breaker and make sure it won't touch anything, then turn the battery on. Use a VOM or test light to see which wire is energized and that will be the feed from the battery. To Pull Toy's post check for voltage and BEFORE putting a wrench on the terminals. A ratchet or wrench on the stud and touching a ground like the frame will make a great welder.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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07-12-2018, 06:42 AM
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#11
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Senior Member
Join Date: Jun 2018
Location: Swanton
Posts: 188
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This tread will help me as someone stole the battery from my trailer and broke the breakers from the frame. I had no idea that they were circuit breakers. Also does it make sense for the 30 amp breaker to be first off the battery then the 50 amp wired after the 30?
Jack
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07-12-2018, 06:55 AM
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#12
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Senior Member
Join Date: Sep 2015
Location: Chetwynd, BC
Posts: 378
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No that does not make sense. Breakers or fuses are to protect the down stream wire and device ( if it does not have its own protection.
__________________
Brent W
2019 Duramax dually
2015 Fuzion 325
2008 Goldwing
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07-12-2018, 08:06 AM
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#13
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Senior Member
Join Date: Jun 2018
Location: Swanton
Posts: 188
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Didn't make sense. I know the breakers job is to protect the wire. I'll wire it 50amp then 30amp. The other way is pointless.
Jack
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