cancel
Showing results forย 
Search instead forย 
Did you mean:ย 

Picking out the right solar system

mdprowash
Explorer
Explorer
I'm usually pretty good with researching various things that I may want or need when I want or need it... but with solar I'm somewhat lost. I've searched the past treads and looked at just about everyone's install but still not sure where start?

Can someone point in the right direction? How do you decide which brand to go with or how many panels? Which controller?

At this time I have two commercial 6v batteries. I'd like to add 2 more. From what I've seen/read.. I will want to have them on a switch as "two banks" I think?

Is there a solar for dummies out there? I want to be self sufficient.. any help would be appreciated! ๐Ÿ™‚
13 REPLIES 13

corvettekent
Explorer
Explorer
OK, so this is what I have. Two 160 solar panels (Grape Solar), #8 wire, Blue Sky Solar Boost 3000i charge controller, and four Interstate 6 volt GC batts.

This system has been working great for me dry camping in AZ
2022 Silverado 3500 High Country CC/LB, SRW, L5P. B&W Companion Hitch with pucks. Hadley air horns.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT, two SOK 206 ah LiFePO4 batteries. Samlex 2,000 watt Pure Sine Wave Inverter.

mdprowash
Explorer
Explorer
corvettekent wrote:
here is some more reading for you. http://www.amsolar.com/home/amr/cpage_9/rv_solar_education.html


Awesome.. and more work.. had to copy and paste it. ๐Ÿ˜‰

corvettekent
Explorer
Explorer
here is some more reading for you. http://www.amsolar.com/home/amr/cpage_9/rv_solar_education.html
2022 Silverado 3500 High Country CC/LB, SRW, L5P. B&W Companion Hitch with pucks. Hadley air horns.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT, two SOK 206 ah LiFePO4 batteries. Samlex 2,000 watt Pure Sine Wave Inverter.

mdprowash
Explorer
Explorer
Golden_HVAC wrote:
Here is a post that I made a couple of days ago. It also includes pictures of my solar system on the roof of my 30' long Bounder. The larger panels are difficult to locate space for them on the roof, without shade from the antenna or A/C unit, and still offer space to walk past them for roof or other maintenance.

Golden_HVAC wrote:


Check out this website for solar panels. You will want one with a aluminum frame to attach to the rooftop mounts. The very lowest cost panels are designed for home installation, not moving vehicles, and usually are designed to have a frame mounted to the home, then the panels mounted to the frame attached to the roof already. I saw a 140 watt panel on this site for $229 a few weeks ago, with a '12 volt nominal' voltage output that is actually about 21 volts open circuit. You could use a PWM controller with it, say 20 amps for a pair of panels, and they are very low cost, only $15 from AliExpress.com


SunElec.com

I used mounts that keep the panels about 1" off the roof, so they actually keep the roofing membrane cooler under the panels, than the exposed roof temperature.

Here are some pictures of my solar mounts, when it rains they are under the panels, so the rain is not directly over the screw holes. Also it makes it more difficult to remove without the proper antitheft Torx screwdriver adapter.

Golden_HVAC wrote:
rickthescot wrote:
Sounds like a great idea. I guess asking for pictures again is not going to persuade you though. We are visual creatures and I don't think 1000 words will accomplish what one image will. You can do it, just one pic.


More pictures that I took a few days ago to post pictures of my solar panels, and their mounts. Some pictures are really close up pictures of the solar panel mounts, and give a clear picture of howrough the surface is.

Golden_HVAC wrote:
Hi,

This is my front pair of panels. 120 watt mounted on a curved roof, 102" wide.



This is the mount it is held on with three rivets into the frame, and then the bottom half is 6" long aluminum, (Home Depot 2" angle aluminum) with nutsert in the upper piece, bolt you can not see from the outside edge pointing inward.









This picture shows the bigfoot panel mount sold by RvSolarElectric for $35 a set back in 1994. I wonder what they cost today?


This picture shows the panels tilted while I was working on the roof.


Fred.


If you google Nutsert insert tool, you will see several videos of people installing nutserts, and they are easy to install, difficult to remove, easy to use to install, tilt or remove the panels.


Let me know if you have any further questions. I have a 415 rated watt system. With it I am covered for my normal 35 AH daily (what one of the 120 watt panels will put out in one day) to run the refrigerator, CO detector and propane leak detector.

The water pump only requires 7 amp hours to pump for 1 hour at 2 GPM, or will empty a 120 gallon tank for only 7 AH or about 85 watts! I would not include that in any estimate of your power usage.

Lights - if you change out 3-5 of your favorite light fixtures to LED, then you do not really need to count them in your amp hour figures to estimate your total energy use per day. You need not replace each fixture bulb, that is not cost effective, and if those fixtures are only run 2 minutes at a time, only say 30 minutes per trip, then the 1 AH they use each trip is not worth calculating into your daily use. This would include my 15 + luggage area lamps, that are rarely used.


Thanks for the info... all my lights are LED

mdprowash
Explorer
Explorer
smkettner wrote:
Panels are a commodity. Shop by price is fine. Are you thinking 100 watts or 500+ watts?

Will two or three larger 24v panels fit? Cut some cardboard the size of a panel and start the discovery of what will fit.

I recommend Morningstar controllers. Or are you trying to do this on the cheap?


I don't know.. to any of your questions.. that's why I'm asking... except for the "cheap" part. I want it done right. Thanks

mdprowash
Explorer
Explorer
pianotuna wrote:
Hi,

Yes, start with an energy audit. Expect to pay under $3 per watt with a DIY installation. That does not include an inverter nor upgrading the battery bank.


Upgrading the battery bank to what? I have two brand new 6 volts and want to add 2 more... I intentionally left out the inverter part to keep it simple.. lol.

Golden_HVAC
Explorer
Explorer
Here is a post that I made a couple of days ago. It also includes pictures of my solar system on the roof of my 30' long Bounder. The larger panels are difficult to locate space for them on the roof, without shade from the antenna or A/C unit, and still offer space to walk past them for roof or other maintenance.

Golden_HVAC wrote:


Check out this website for solar panels. You will want one with a aluminum frame to attach to the rooftop mounts. The very lowest cost panels are designed for home installation, not moving vehicles, and usually are designed to have a frame mounted to the home, then the panels mounted to the frame attached to the roof already. I saw a 140 watt panel on this site for $229 a few weeks ago, with a '12 volt nominal' voltage output that is actually about 21 volts open circuit. You could use a PWM controller with it, say 20 amps for a pair of panels, and they are very low cost, only $15 from AliExpress.com


SunElec.com

I used mounts that keep the panels about 1" off the roof, so they actually keep the roofing membrane cooler under the panels, than the exposed roof temperature.

Here are some pictures of my solar mounts, when it rains they are under the panels, so the rain is not directly over the screw holes. Also it makes it more difficult to remove without the proper antitheft Torx screwdriver adapter.

Golden_HVAC wrote:
rickthescot wrote:
Sounds like a great idea. I guess asking for pictures again is not going to persuade you though. We are visual creatures and I don't think 1000 words will accomplish what one image will. You can do it, just one pic.


More pictures that I took a few days ago to post pictures of my solar panels, and their mounts. Some pictures are really close up pictures of the solar panel mounts, and give a clear picture of howrough the surface is.

Golden_HVAC wrote:
Hi,

This is my front pair of panels. 120 watt mounted on a curved roof, 102" wide.



This is the mount it is held on with three rivets into the frame, and then the bottom half is 6" long aluminum, (Home Depot 2" angle aluminum) with nutsert in the upper piece, bolt you can not see from the outside edge pointing inward.









This picture shows the bigfoot panel mount sold by RvSolarElectric for $35 a set back in 1994. I wonder what they cost today?


This picture shows the panels tilted while I was working on the roof.


Fred.


If you google Nutsert insert tool, you will see several videos of people installing nutserts, and they are easy to install, difficult to remove, easy to use to install, tilt or remove the panels.


Let me know if you have any further questions. I have a 415 rated watt system. With it I am covered for my normal 35 AH daily (what one of the 120 watt panels will put out in one day) to run the refrigerator, CO detector and propane leak detector.

The water pump only requires 7 amp hours to pump for 1 hour at 2 GPM, or will empty a 120 gallon tank for only 7 AH or about 85 watts! I would not include that in any estimate of your power usage.

Lights - if you change out 3-5 of your favorite light fixtures to LED, then you do not really need to count them in your amp hour figures to estimate your total energy use per day. You need not replace each fixture bulb, that is not cost effective, and if those fixtures are only run 2 minutes at a time, only say 30 minutes per trip, then the 1 AH they use each trip is not worth calculating into your daily use. This would include my 15 + luggage area lamps, that are rarely used.
Money can't buy happiness but somehow it's more comfortable to cry in a

Porsche or Country Coach!



If there's a WILL, I want to be in it!



I havn't been everywhere, but it's on my list.

Kangen.com Alkaline water

Escapees.com

time2roll
Nomad
Nomad
Panels are a commodity. Shop by price is fine. Are you thinking 100 watts or 500+ watts?

Will two or three larger 24v panels fit? Cut some cardboard the size of a panel and start the discovery of what will fit.

I recommend Morningstar controllers. Or are you trying to do this on the cheap?

pianotuna
Nomad III
Nomad III
Hi,

Yes, start with an energy audit. Expect to pay under $3 per watt with a DIY installation. That does not include an inverter nor upgrading the battery bank.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

mdprowash
Explorer
Explorer
coolmom42 wrote:
THIS THREAD

contains links to some other threads and sites that should help you out.

First step is to figure out how much power you consume, and then size the system from that point. The spreadsheet linked in the thread above is amazing for that purpose.


Sheeesh... more reading??? I said for dummies..lol Thanks!!! Will read tomorrow. cannot compute tonight!

let's assume I want to consume max power from four 6v batteries?

coolmom42
Explorer II
Explorer II
THIS THREAD

contains links to some other threads and sites that should help you out.

First step is to figure out how much power you consume, and then size the system from that point. The spreadsheet linked in the thread above is amazing for that purpose.
Single empty-nester in Middle TN, sometimes with a friend or grandchild on board

mdprowash
Explorer
Explorer
So.. if I hang this in my camper... I'm good to go? I like it... Thanks! ๐Ÿ™‚

JoeTampa
Explorer
Explorer
From the title of your post, I was going to suggest this solar system:




...Sorry. ๐Ÿ™‚ I'll leave the real answers to the more knowledgeable folks.
2006 Keystone Cougar 243RKS (First trailer)
2016 Jayco Jay Flight 32BHDS (Traded in)
2016 Jayco Jay Flight 33RBTS (Current)
2006 Chevy Silverado 2500HD 4WD 6.6L Duramax Diesel (LBZ)
Blue Ox Swaypro 1500 WDH
Prodigy P2 BC
Amateur Call AB2M