Is this a 12V breaker?

[ATLPanther]

I noticed this object with 2 wires connected to it with a blue button (see bottom of picture) next to my chassis battery when I was pulling the chassis battery out to clean it, put distilled water in, and charge it since my shore power was not charging the chassis battery, only charging the house batteries. I charged the original Motorcraft battery and it now reads at 14.17V. I'm going to get it load tested since this could be just a surface charge. I don't know why they don't use AGM maintenance free batteries since it was a bear getting the battery out with the maze of wires and hoses limiting access.

I'm not familiar with 12V breakers as my earlier campers just had fuses for the 12V items. The only breakers were the traditional 120V ones. The Thor electrical diagram shows a breaker up near the chassis battery but I there is no where I can find that shows what it controls. I assume its a 100 amp breaker since there is "100" written next to the blue button. The only items with 100 amps listed are the "Chassis Fuse Panel" and the "Hydraulic Jacks." Maybe I'm answering my own question but it seems like the most likely would be the "Chassis Fuse Panel" since the Hydraulic Jacks pump is located in the back of the Windsport.

So how does this breaker work? Do you press the button to reset it or does it stay out. I guess I'm asking how to reset the breaker. Is it possible that this breaker is the reason why my chassis battery wasn't getting charged when I was plugged into 50amp shore power? I assume, maybe incorrectly, that when plugged into shore power both the house batteries and the chassis battery would be charged. Am I incorrect?

 

[Bob Nodine]

100 amp 12 volt circuit breaker most likely connected directly to one of the battery systems. If the beaker trips the blue button will pop out and to reset the breaker push it in.

Not all motorhomes charge the chassis battery while plugged into shore power. Yours may be one of those. Ours was but I modified it so the chassis battery is charged from shore power. Many, many, many posts on that subject.

 

[16ACE27]

100 Amp breaker that goes to the chassis supplied RV loads and the Emergency Start system. Despite what Bob said, the button is usually a test button that trips the breaker. A tripped breaker has a flag that becomes visible. To reset the breaker you have to push the flag back it.

Yes, your converter should charge the chassis battery on your Windsport. You likely have a BIRD/Trombetta pair. The Trombetta solenoid is a common failure item.

 

[ATLPanther]

I'm pretty sure I have a BIM, at least that's the info I got when reading the THOR documentation I got with the Windsport. Where would I look for that? I haven't yet lifted the bed up to find out what's underneath. Could it be located there?

 

[16ACE27]

I'm pretty sure I have a BIM, at least that's the info I got when reading the THOR documentation I got with the Windsport. Where would I look for that? I haven't yet lifted the bed up to find out what's underneath. Could it be located there?

I'd start in the battery compartment on a class A.

 

[PS89]

Excerpted from the Thor Schematics for the OP's RV. Download your own copy so you have it on hand.

Is it possible that this breaker is the reason why my chassis battery wasn't getting charged when I was plugged into 50amp shore power?

No. That function is provided via the BIM (assuming it's connected properly and it likely isn't).

 

[ATLPanther]

Excerpted from the Thor Schematics for the OP's RV. Download your own copy so you have it on hand.

View attachment 1303674

Thanks, PS89!
I stopped one page before that one for some obscure reason! Looks like its definitely a BIM.