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Old 03-25-2019, 11:11 PM   #1
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Brand: Thor Motor Coach
Model: Chateau 31L
State: Florida
Posts: 438
THOR #12189
Mystery Part/Breaker?

I came across this today fixing a leak.

It's sits opposite and marries to a terminal block housed in the battery cage under the steps.

The top wire disappears into the chassis and seems headed toward the back. The bottom wire goes back above the battery cage and gets lost in a menagerie of other shielded cables.

I pushed the red button which popped the yellow lever. I pushed the yellow lever back in.

Does anyone know:
1) What I did, if anything
2) What it does
3) Why it's there and in such a bizarre location - exposed to the elements.

Thanks
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Old 03-25-2019, 11:51 PM   #2
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 2,650
THOR #7035
Quote:
Originally Posted by TheBreeze View Post
I came across this today fixing a leak.

It's sits opposite and marries to a terminal block housed in the battery cage under the steps.

The top wire disappears into the chassis and seems headed toward the back. The bottom wire goes back above the battery cage and gets lost in a menagerie of other shielded cables.

I pushed the red button which popped the yellow lever. I pushed the yellow lever back in.

Does anyone know:
1) What I did, if anything
2) What it does
3) Why it's there and in such a bizarre location - exposed to the elements.

Thanks
It's a DC breaker and probably connects the battery to the DC Buss through the USE/STORE relay.
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Old 03-25-2019, 11:56 PM   #3
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Model: Axis 24.1
State: Michigan
Posts: 8,006
THOR #1150
The red button is a test: pressing it in trips the breaker. Pushing the yellow flag back in resets the breaker.
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Old 03-26-2019, 01:21 AM   #4
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 419
THOR #13869
Ours has three of them, I think all are 50 amp circuit breakers.
I know one is for the LCI hydraulic leveler pump motor, or at least I believe so.

They all connect in line with one of the coach battery positive terminals, or to an insulated, from the frame, junction post.

I just haven't put the time to see which protects what.
One could be for the inverters, or the 12vdc slide out motors.
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Old 03-26-2019, 02:06 AM   #5
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THOR #12189
Thank you.
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Old 03-26-2019, 02:18 AM   #6
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i have 3 on my 29m. One is for jacks and gen, one for inverter, and last is for the power supply breaker box

This info is from Thor

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Old 03-26-2019, 03:04 PM   #7
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Model: Chateau 31L
State: Florida
Posts: 438
THOR #12189
Quote:
Originally Posted by 10scDust View Post
Ours has three of them, I think all are 50 amp circuit breakers.
I know one is for the LCI hydraulic leveler pump motor, or at least I believe so.

They all connect in line with one of the coach battery positive terminals, or to an insulated, from the frame, junction post.

I just haven't put the time to see which protects what.
One could be for the inverters, or the 12vdc slide out motors.
p.s. I've only come across this one. Where are the other two?
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Old 03-27-2019, 10:41 AM   #8
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
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THOR #13869
Quote:
Originally Posted by TheBreeze View Post
p.s. I've only come across this one. Where are the other two?
It started with a leveler system in err, for ours.
YouTube saying it may be one of these circuit breakers (none were tripped).

Presently, I am now like 6 months new to this RV from a travel trailer, but then a real newbie.

Found them by laying on the ground, looking up on the outside of the coach battery carrier frame, inaccessible unless you crawled under there.
That's when I saw the battery cables drooped down looking like they could snag on something and cause more havok.

I built a bracket, from 16ga x 3" steel I had in the shop, drilled it for relocating the breakers, then bolted the bracket between the battery carrier frame and the chassis framework.
Drilling holes in the frame, then bolting it up good with ss bolts, and painting them black.

Now they are easily seen from lifting the step, all cables are tied down neatly, just slighty tight for my big hands to reach, but I can.

I didn't even know what they were at first, still not sure which protects what (thanks halfprice for the info).
It is a first check now when something goes awry, never found one tripped yet, glad so too.

On yours, that would be a good place to start, looking up under there, they should be close to the batteries as they are between a positive battery connection, then into the framework to wherever they go.

Good luck.
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