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Old 06-09-2019, 07:52 PM   #1
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What am I Looking at in the Circuit Box?

This is the inverter / circuit breaker / fuse box on my new 2019 31BHSC. I want to buy replacement fuses to have on hand just in case, but I'm not sure what I'm looking at here.

In this first image, I see the 15 amp fuses well enough and I guess that's a 1 amp fuse. What is the large 12v30amp thing in the middle? What are the two things that look like fuses in the upper right hand corner labeled 5E?

I'm also wondering what the green light is telling me in the second image.

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Old 06-09-2019, 07:59 PM   #2
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Originally Posted by ScenicView View Post
This is the inverter / circuit breaker / fuse box on my new 2019 31BHSC. I want to buy replacement fuses to have on hand just in case, but I'm not sure what I'm looking at here.

In this first image, I see the 15 amp fuses well enough and I guess that's a 1 amp fuse. What is the large 12v30amp thing in the middle? What are the two things that look like fuses in the upper right hand corner labeled 5E?

I'm also wondering what the green light is telling me in the second image.

Attachment 206855

Attachment 206856
I think if you turn your SE fuses upside down, you'll find they say 35.
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Old 06-09-2019, 08:13 PM   #3
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I think if you turn your SE fuses upside down, you'll find they say 35.
Ha! Part of the mystery solved! Thanks. Any idea what the 12v 30 amp is?
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Old 06-09-2019, 08:21 PM   #4
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You mean CONverter, not INverter.
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Old 06-09-2019, 08:27 PM   #5
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You mean CONverter, not INverter.
Good point. Iíll get the hang of this sooner or later. Iíll do some basic wiring at home, but I donít understand this TT electrical system well enough to do anything more than kill the power and change a fuse.
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Old 06-09-2019, 08:43 PM   #6
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Quote:
Originally Posted by ScenicView View Post
This is the inverter / circuit breaker / fuse box on my new 2019 31BHSC. I want to buy replacement fuses to have on hand just in case, but I'm not sure what I'm looking at here.

In this first image, I see the 15 amp fuses well enough and I guess that's a 1 amp fuse. What is the large 12v30amp thing in the middle? What are the two things that look like fuses in the upper right hand corner labeled 5E?

I'm also wondering what the green light is telling me in the second image.

Attachment 206855

Attachment 206856
The 12v30amp is a auto-reset breaker

The 2 5E or 35 amp fuses are the reverse polarity fuses. If you connect the battery backwards those will blow to protect your converters charger section.

I don't have an idea about the green light.
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Old 06-10-2019, 04:27 AM   #7
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The 12v30amp is a auto-reset breaker

The 2 5E or 35 amp fuses are the reverse polarity fuses. If you connect the battery backwards those will blow to protect your converters charger section.

I don't have an idea about the green light.
Is the 12v30amp for the slide outs? Do you know if it's replaceable like the other fuses?
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Old 06-10-2019, 02:50 PM   #8
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I don't know if it's for the slideouts. Slides are usually wired directly to the 12vdc system because of the amount of amps needed and fused separately with an inline fuse. They are not connected to the fuse panel. Most manuals say to have your TT plugged into shore power when operating the slides. That auto-reset breaker should be removable as it just plugs into a fuse slot. You could remove it then try everything until you find what doesn't work. Is there anything written on the label of the door to the panel.
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Old 06-10-2019, 03:20 PM   #9
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The slideout on our Rockwood Roo trailer had its own 30amp fuse along the frame, next to the bottom of the slideout.
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Old 06-11-2019, 09:56 AM   #10
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What brand and model power center is that?

It's interesting to say the least.
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Old 06-11-2019, 10:11 AM   #11
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I am a very very VERY slow learner. Sometimes a Non Learner.

But I recently found out that the usual wiring method at the fuse panel is that for 50 amp, 2 leg circuits, all of the connections in Leg 1 are to the left of the LEFT MAIN breaker, and all of Leg 2 circuits are to the right (or vice versa, depending on how many donuts they had that day).
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Old 06-11-2019, 10:27 AM   #12
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That is correct. Unlike residential panels RV panels don't alternate L1 & L2 stabs. All the L1 stabs are on one side of the main breaker and all the L2 stabs are on the other side.
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Old 06-11-2019, 12:31 PM   #13
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OP's questions are more towards the DC fuses and not the 120v breakers. The dc side doesn't care if he has 30a or 50a service. The only thing I don't understand is why the labels for the fuses is missing in his pictures, if they were ever labeled.

Quote "What is the large 12v30amp thing in the middle?"
What I do know is that is marked with "12v30A" and is a auto-reset 12volt 30 amp breaker.

Quote "What are the two things that look like fuses in the upper right hand corner labeled 5E?"
Those are the 35 amp reverse polarity fuses.

The OP's last comment could be either 12v or 120v related. Quote "I'm also wondering what the green light is telling me in the second image."
Just a guess but it might be an indicator light for the inverter if he has one. He doesn't say what the brand and model of his panel is. He may have a combination inverter/converter/charger.
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Old 06-11-2019, 01:05 PM   #14
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Green lamp? For curiosity switch off the Converter breaker and see if it stays lit. Assuming you're plugged into shorepower. It may be an indicator that the Converter and not the battery is handling the 12vVDC circuits. (Mine doesn't have the lamp.)

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Old 06-11-2019, 01:19 PM   #15
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Are there any 50 amp fuses?

I will see if I can get the model / brand of the power center and post that. I have 50 amp service, but don't see any 50 amp fuses. Is that all handled by circuit breakers?
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Old 06-11-2019, 01:33 PM   #16
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You won't see any 50amp fuses. The 50 amp service applies to the AC side of the panel. If you are new to RV's you should take a gander at the following thread,
New to RV's helpful hints by wmtire. It has a lot of good information and will explain the 50 amp service.
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Old 06-11-2019, 04:54 PM   #17
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You won't see any 50amp fuses. The 50 amp service applies to the AC side of the panel. If you are new to RV's you should take a gander at the following thread,
New to RV's helpful hints by wmtire. It has a lot of good information and will explain the 50 amp service.
Iíll check that out tonight.
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Old 06-13-2019, 03:40 PM   #18
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Green is good! Don't worry about it until it goes out or turns red.
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Old 06-13-2019, 04:03 PM   #19
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I " think" a green light means all fuses are good. No green or red at least one has blown
I think I remember that from my PID.
Let use know if Im right or wrong that way I'll know what my green light means��
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