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Old 02-21-2020, 09:08 PM   #1
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Access the 12 volt panel on a 2019 FC 30 rb

I am adding some solar to my 2019 FC and need to gain access to the 12 volt panel. It is under the lounge and I am wondering if there are any tricks to getting at it. I donít think I can swing working through the under bench storage door. Any suggests would be appreciated.
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Old 02-21-2020, 09:55 PM   #2
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Access the 12 volt panel on a 2019 FC 30 rb

Iíve got the same trailer....

If you use the factory input box with SAE connectors already installed on the roof itís already wired down to the bus bars under the couch.

Itís good for 300watts (3 connector inputs) before you max out the wire gauge from the factory running panels in parallel. You can push to 600w if you configure series-parallel wiring. I added a picture of my roof and you can see the factory input forward of the front air con unit (not used in my install due to the size of my array).

If you want to run new wire (for a large array, >600 watts) you need to remove the fridge, run heavy guage wire down through the roof vent, then along the wall under the dinette and L- couch to access the bus bar at the front of the trailer if that is your destination. On my install we went through the bathroom into the bedroom and under the rear queen which is where my batteries are located.

I run 8 panels which put out 60amps of solar bliss
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Old 02-22-2020, 08:40 AM   #3
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Thanks, your set up looks great. I was wondering if you took anything apart to get to the 12 volt panel for wiring. I am on the fat side and can’t get into the area under the lounge. Any ideas?
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Old 02-22-2020, 11:13 AM   #4
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I agree itís tight space back there no doubt.

disassembly of the lounge is the way to go if you are going to locate your controller back there and you donít want to spend 3 hours on your stomach under the couch.

Takes an hour or two by pulling all the wood screws that hold the lounge down. Not that big of a deal actually. Thatís what happened on my first trailer with the same floor plan.

In this trailer the solar and electrical system install was very extensive (80hours+) and my batteries are under the rear bed and my lounge has also been reconfigured and the rear storage was removed, and I actually have access from the top to bus bars....

How many watts are you adding up top?

https://www.airforums.com/forums/f53...um-182406.html
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Old 02-22-2020, 11:21 AM   #5
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That is the conclusion I am coming to. Just adding 400W and using the prewire. I think that will top up my batteries most days for boondocking. At least for 3 to 4 days. Your install under the bed looks great.
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Old 02-22-2020, 02:22 PM   #6
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Access the 12 volt panel on a 2019 FC 30 rb

Yes if you have 400w and use two lead acid batteries or two lithium 100ah batteries youíll be happy with that setup...

I would throw the solar charge controller under the couch right near the bus bars where the wire from the combiner box up top terminates. It should be marked as solar and will not be connected to anything. Recommend a victron 100/30 MPPT controller with Bluetooth for that setup. You can connect to it with your phone, table or laptop as needed to check things out...

From the charge controller to the bus bars remember to bypass the store/use switch and go straight to the hot bus bar thatís fed directly by the battery 6ga red wire from the battery. That will allow you to charge the batteries when everything else in the trailer is off using the store/use .

While you are in there move the propane detector positive off the constant hot bus bar over behind the use/store switch to eliminate constant draw on the batteries.

You might also consider a victron bmv.712 battery monitor while you are at it so you donít have to guess on what capacity you have based on voltage, which varies based on ambient temperature and other factors.

Finally, like others I would recommend a no-drill approach to mounting your panels. Use 3M VHB (very high bond) tape and come over the top with silkaflex 221 to seal out water / add extra adhesion.
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Old 02-22-2020, 06:49 PM   #7
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Thank you for the tips. I pulled the couch out this afternoon. It was easier than I imagined. I have the Victron 100/30 smart charge controller, BVM-712 unit, and VHM tape and Silkaflex sealant for mounting the panels. Thanks for the tips on connecting the postive lead from the charge controller and moving the detector feed. I hope to have all in place by next weekend.
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Old 02-22-2020, 07:11 PM   #8
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Sweet post some pictures of all your hard work!
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Old 02-29-2020, 08:04 PM   #9
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Photos of Solar Power System FC30

Just a few picutres:
4 X Renogy 100W panels
1 X Blue Sea switch for panel on/off
1 X Victron Energy 100/30 Smart MPPT
1 X 40 Amp Breaker/Switch
1 X VE BVM-702 w/Temp Sensor

Used AS prewire w/8AWG with 2 parallel sets of 2 panels in series generating 34 volts and up to 13 amp. MPPT charges 2 Trojan 105 6 volt batteries in series.

MPPT installed in the bay with the AS supplied 1000w inverter.

Used the prewire Cat 5 for the BVM-702, but had to change the connectors to REG11 to match the BVM-702.

Pulled the unit out in the sun and turned on all the lights, inverter and tvs, all the fans except the furnace and panels were feeding in 275 watts.

Simple system but it should help keep the battery levels up for boon docking without running the generator.

Thanks for all the info in the threads.
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Old 02-29-2020, 10:09 PM   #10
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Very nice!
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Old 03-02-2020, 11:23 PM   #11
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Quote:
Originally Posted by Zephyr291 View Post
Just a few picutres:
4 X Renogy 100W panels
1 X Blue Sea switch for panel on/off
1 X Victron Energy 100/30 Smart MPPT
1 X 40 Amp Breaker/Switch
1 X VE BVM-702 w/Temp Sensor

Used AS prewire w/8AWG with 2 parallel sets of 2 panels in series generating 34 volts and up to 13 amp. MPPT charges 2 Trojan 105 6 volt batteries in series.

MPPT installed in the bay with the AS supplied 1000w inverter.

Used the prewire Cat 5 for the BVM-702, but had to change the connectors to REG11 to match the BVM-702.

Pulled the unit out in the sun and turned on all the lights, inverter and tvs, all the fans except the furnace and panels were feeding in 275 watts.

Simple system but it should help keep the battery levels up for boon docking without running the generator.

Thanks for all the info in the threads.
Very nice indeed! This is a simple DIY installation that will provide perpetual battery power for a stock Airstream. It does not power all the 120V outlets, you can't run the microwave or A/C from batteries, but you can use your otherwise stock Airstream like it has (nearly) unlimited battery power without ever needing shore power. It costs less than $2,000 and is an easy self install. By easy I mean its not much more difficult than hooking up a battery charger. Great job! Thanks for sharing your installation.
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Old 03-04-2020, 03:20 AM   #12
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Thank you.
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Old 03-09-2020, 06:09 AM   #13
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Good to see you got it one! You make it sound effortless.


I spent the weekend installing the panels on my 600W setup, I'm very sore at the moment. Muscles that had never been used were called into service
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Old 03-10-2020, 11:34 PM   #14
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Be careful and good luck.
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