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rbts's avatar
rbts
Explorer
Apr 12, 2018

Doing an electrical system from scratch, need some help!

Hey everyone! I joined this forum specifically to ask this question and I hope someone here can help me figure it out.

My wife and I purchased a used 2011 Forest River R-Pod with the intention of doing a light remodel (paint and replacing vinyl floor) and it is now a down-to-the-studs remodel after finding water damage in the floor and walls that wasn't noticeable until the floor was removed.

Anyway, since I have the opportunity to put whatever I want into an empty shell of a camper, I'm doing everything from scratch with new components since the original systems looked awful, maintenance heavy and childishly wired in my opinion. We're going for a low energy solar/shore power setup thats as maintenance free as possible.

I've done literal days of research now and think I have it all figured out except for one detail. Without specifications (since I've only decided on one component), here's what I've planned:

Solar panels (wattage TBD)
Solar charge controller
Spartan Power 2200w inverter/charger (also includes a transfer switch): ***Link Removed***
AGM batteries (probably two 6V, haven't calculated my needs yet).

What I'm stuck on is probably the simplest part of the setup, the distribution panel. Initially I had trouble because I didn't even know the right keywords to search for, and could only find residential sized breaker panels.

The problem I'm having now is that I can find extremely few options that DON'T include a converter/charger. Correct me if I'm wrong, but I don't think I'll be needing one with the inverter/charger I've chosen as our camper will be connected to the 30amp shore power for the majority of our trips.

I've currently found these two that I think complete the system, providing a DC panel and an AC panel in compact form without also adding in a converter/charger:

***Link Removed***
***Link Removed***


Will either of these work to complete the system, am I missing something, or is there a better product I should be looking for?
  • Almot's avatar
    Almot
    Explorer III
    rbts wrote:
    I know its over the top for a small travel trailer, but I actually have the budget to have some fun with it. We bought it 1/2 price and had the budget for a new one, so theres some room to play with ideas right now.

    I'm thinking you are over-thinking the electrical part. There is little to add to what Time2roll said - get a pair of 2*6V or 2*12V, good CONverter, and go camping. See how it works for you. There isn't much need to buy AGM if they are not inside the trailer.

    Skip solar and big INverter for now. On a few odd off-grid days you won't die without running a toaster or microwave.

    Get a small 150w inverter for charging laptop and phone, it's cheap, MSW type is fine. Something like This one.

    No installation is needed, they usually come with cig lighter plug - and you should have 12V cig receptacle in trailer. When and IF you install big 2,000-3,000W inverter later, you'll keep small one as a spare.

    Insulation is a big thing. At the factory they put fiberglass insulating "wool" in the walls with many bold spots.

    Disclaimer: I do have solar and AGM. But I am almost always off-grid, and my batteries are kind of inside, in under-bed pass-through storage.
  • rbts wrote:
    Thanks for the tip and well wishes. I know its over the top for a small travel trailer, but I actually have the budget to have some fun with it. We bought it 1/2 price and had the budget for a new one, so theres some room to play with ideas right now.

    Definitely going to cram as much XPS sheets into those tiny walls as I can!

    You're welcome. For sure have some fun with your project. The really nice thing about restoring a travel trailer is that you can outfit as YOU deem nice, not as something that sells quickly or shows well at the RV show.

    What I did with the insulation is (from exterior to interior):1" fiberglass batt against inside of aluminum siding,compressed, 1" extruded polystyrene, polyethelene 4 mil vapor barrier, 1/4" fanfold extruded polystyrene across the wall and ceiling surfaces (acts as a thermal break). I used the fiberglass batt against the siding so some air could exchange, allow for water drainage in a leak situation, and allowed for wiring installtion. The foam board panels were individually cut for each frame space with foam adhesive recovering any possible leakage into the frame. The vapor barrier just makes sense. The fanfold-thermal break keeps the inside paneling warm in Winter and cool in Summer.

    Results: I can heat the trailer in MN, in the Winter with a single 1200W electric heater.

    Good luck with the project and keep us informed!
  • Almot's avatar
    Almot
    Explorer III
    Westend wrote:
    1" fiberglass batt against inside of aluminum siding,compressed, 1" extruded polystyrene, polyethelene 4 mil vapor barrier, 1/4" fanfold extruded polystyrene

    Wow. I wonder if those i.diots will ever make trailers like this. Would've only add 1.5K in labor and materials (or less).
  • Naio's avatar
    Naio
    Explorer II
    Get a small 150w inverter for charging laptop and phone, it's cheap, MSW type is fine.


    No, no! Don't use a MSW inverter for your electronic devices!

    I killed my laptop that way, after charging fine the first few times. Plus, the MSW did something to the laptop charger, so when I used the same charger on a different laptop, on 120v shore power, it killed that second laptop too.

    Just get 12 volt chargers for your electronics on eBay. About $10 for the laptop and $1 for two phones. Or get a small PSW, if you want to run the TV and stuff.
  • Almot's avatar
    Almot
    Explorer III
    Naio wrote:
    Don't use a MSW inverter for your electronic devices!

    I killed my laptop that way, after charging fine the first few times. Plus, the MSW did something to the laptop charger,

    Could it be a faulty MSW inverter? I have never had a problem with MSW on laptop and phone chargers.

    PSW is sure better. Go Power have 300W PSW for $170, with fan - which is good and bad thing. Don't know if there are any reliable PSW for less money.
  • Naio's avatar
    Naio
    Explorer II
    I don't know. It works fine for other appliances. I suspect different laptops react differently to MSW but I am not going to experiment on my new one!

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