Seeking advice about electrical/solar system for Uhaul CT 13? - Fiberglass RV


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Old 11-24-2012, 11:51 AM   #1
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Seeking advice about electrical/solar system for Uhaul CT 13?

Hi everyone,

We are trying to figure out what to buy to make an updated electrical and solar system for our new 1984 Uhaul CT 13. We figure we will never be hooked up to house current, so we would leave the converter as is for now, but change the following: buy a Whistler Pro-1200W 1,200 Watt Power Inverter to run straight off the battery, Whistler IC-2000W 2 Gauge Power Inverter Cables, Scosche EWFH Single ANL Fuse Holder to put inline, and the super panel kit from RV solar electric that includes:

Carmanah CTI-80 panel - (80 watts, 4.59 amp 26" x 41")
Morningstar SS-10 Controller - (10 amp capacity with LED charge light)
Fixed/Flat mount kit with mounting hardware
30 foot 10/2 UV rated wire
Hardware package - (fuse/holder, ring lugs, wire clamps, roof sealer, instructions, etc.)

Then we were going to get the special feet that use VHB tape to hold the panel to the roof. Figured we would need 6 just to be sure?

Anyway, what do you think about that? We are going to be boondocking only, never with hookups, and I have to work on my computer out of the trailer. We were going to get a fantastic fan and use LED lights, but that's about it.

Thanks very much for any advice you could offer.

Linda and Andre
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Old 11-24-2012, 12:12 PM   #2
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It sounds like you've given it a lot of thought. Some additional thoughts:

Will you be mounting the solar panel behind the vent? With those dimensions, I'd think you'd have to mount it sideways? Another option is to mount two smaller panels front and rear.

If you care to save a little money, you can piece this kit together for less money from individual components at a place like Solar Blvd. For instance their 80 watt panel is $116, a Morningstar controller is $45

That's a fairly large inverter and it has it's own parasitic losses. What will you need to run off from it? If you can run the same devices (like a laptop) off 12 volts or a smaller inverter, it is more efficient.
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Old 11-24-2012, 12:25 PM   #3
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Hi Tom,

How about two of these, from solar Boulevard?
Cells: with Q-Cells
Model Name: PV-SC040J12-M
Number of Cells: 36 cells in a series (4 x 9)
Max Power: 40W
Open Circuit Voltage (Voc): 21.6V
Short Circuit Current (Isc): 2.57A
Maximum Power Voltage (Vmp): 17.2V
Maximum Power Current (Imp): 2.33A
Dimensions (inches): 25.37 x 21.37 x 1.00
Weight: 10 pounds
Manufacturer: Solar Cynergy

And do you have a recommendation for an appropriate inverter? We are so grateful for your advice!

Linda and Andre
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Old 11-24-2012, 12:42 PM   #4
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Just curious.
Why the inverter if you're going to be boondocking and you have solar?
That's all I do and have never missed the inverter.
I have a little $30.00 inverter that plugs into a 12v outlet to charge my laptop, cellphone and camera batteries.
I personally think an inverter is unneeded and a waste of money if you have a solar system.
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Old 11-24-2012, 12:48 PM   #5
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What do you want to have being powered by the system? How many batteries?

This info is needed I find to make the right choice.
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Old 11-24-2012, 12:49 PM   #6
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Hi Perry,

To charge the computer, which we use a lot, we need an inverter, and I just wanted to plug my computer into a plug, so I wanted it directly wired to the battery. but I guess we could just get a way smaller inverter.

Thanks very much for your advice!

Linda
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Old 11-24-2012, 12:51 PM   #7
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Hi Byron,

We just have one 12 volt deep cycle battery right now. We figured we could get two 6 volt golf cart batteries at some point, but the 12 V battery is new and came with the trailer, so we hoped we could use it for awhile. All we are going to use the power for is the computers (2) and a few 12V lights and the Fantastic fan.

Thanks!

Linda
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Old 11-24-2012, 12:57 PM   #8
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Originally Posted by Lindl View Post
Hi Tom,

How about two of these, from solar Boulevard?
Cells: with Q-Cells
Model Name: PV-SC040J12-M
Number of Cells: 36 cells in a series (4 x 9)
Max Power: 40W
Open Circuit Voltage (Voc): 21.6V
Short Circuit Current (Isc): 2.57A
Maximum Power Voltage (Vmp): 17.2V
Maximum Power Current (Imp): 2.33A
Dimensions (inches): 25.37 x 21.37 x 1.00
Weight: 10 pounds
Manufacturer: Solar Cynergy

And do you have a recommendation for an appropriate inverter? We are so grateful for your advice!

Linda and Andre
Sure. You could even do two 60 watt for just a little more.

If all you want to power is the laptop, I'd go with a 100 or 200 watt converter like these: Amazon.com: 200 watt inverter: Automotive

There are also laptop adapters for a cigarette lighter that may be more efficient.
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Old 11-24-2012, 01:00 PM   #9
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Originally Posted by Lindl View Post
Hi Byron,

We just have one 12 volt deep cycle battery right now. We figured we could get two 6 volt golf cart batteries at some point, but the 12 V battery is new and came with the trailer, so we hoped we could use it for awhile. All we are going to use the power for is the computers (2) and a few 12V lights and the Fantastic fan.

Thanks!

Linda
If you have sunshine and a decent sized solar panel (60 watts+), you shouldn't need to go with the two golf cart batteries for your usage.
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Old 11-24-2012, 01:13 PM   #10
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Originally Posted by Lindl
Hi Byron,

We just have one 12 volt deep cycle battery right now. We figured we could get two 6 volt golf cart batteries at some point, but the 12 V battery is new and came with the trailer, so we hoped we could use it for awhile. All we are going to use the power for is the computers (2) and a few 12V lights and the Fantastic fan.

Thanks!

Linda
Sounds like you could get away with a smaller panel since you only have the 1 battery. When you run power off the inverter just make sure the battery does not get to low. Do you have a good solar controler?

Have you though about making a stand for the solar panel so you can follow the sun with it?
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Old 11-24-2012, 01:17 PM   #11
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Just looked at first post on controller. As long as you don't add items to the list u can make due. But from the looks of it you are on the tight side. So no laptop charging at night.
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Old 11-24-2012, 01:18 PM   #12
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Thanks for all the advice! We are going to use the two 40 watt panels, but unfortunately they do not come in a kit, so we will get the Morningstar controller from Solar Boulevard, too, but then we need all kinds of other stuff I guess, wires and so on. Hopefully, if we call Solar Boulevard, they can set us up? Then we are going to get these feet.
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Old 11-24-2012, 01:19 PM   #13
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Hi Byron,

You mean we need a bigger controller if we want to charge the laptop at night?
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Old 11-24-2012, 01:29 PM   #14
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Hi Byron,

You mean we need a bigger controller if we want to charge the laptop at night?
No, I just didn't know some info till I did a re-reading of first post what the plan was.

I say to avoid charging laptop at night due to the single battery, don't want to kill it. However if batteries are getting juiced up you can skim off the top.
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