Outdoor Solar Lights

Just thinking thing over. Want to install a 120 volt AC to12 volt DC converter, as the ones found in most RV’s. The 12 volt would be used power 12 volt light fixtures as one found in RV’s, and Marine crafts. The 12 volts could be used with a solar panel. The solar panel would be used to charge a 12 volt battery(s), and the 12 volt battery could be used to power the lights during the night.

I thought of using resistors for each light within the low voltage lighting electrical wires to control even distribution of lighting.

Planning on setting up 12 volt electrical boxes in each room, and adding extra 12 bolt electical boxes in living room and dining room and kitchen and laundry room. This would allow lighting for walkway and task lighting and backup lighting when electrical power goes out or gets to pricey.

With the price of electicity and gas going up, I thought that this would be a way of lighting my home and saving utility money.
Here are a few of the 12 volt lights.

http://www.outdoorgb.com/c/12v_lighting/

A 12 volt light bulb range from 4 watts to 25 watts.
The 12 volt distribution panel http://www.bestconverter.com/assets/images/Parallax/Distropanels/50012P24brochure.pdf can as a battery charger when needed. This panel is rated a 50 amps.
A few more 12 volt recessed lights http://www.swego.com/12_volt_recessed.htm mostly rated at 10 watts and these are xenon lights.
The electrical lines would be anywhere from 10 feet to the longest run of 70 feet. The electrical wire would be 12/2 CL2 rated for low voltage wires.

The 12 volt distribution panel will power the lights and can be used to charge a 12 volt battery when needed.
I would then add a toggle switch to shut of power to solar panel when not in use.
The reason I choose the 12 volt distribution panel because this system had the built in led lights for the blown fuse detection and the fuses are a safety feature in case things go bad with lights or 12 volt fixtures.
There for twelve of the 10 watt recessed lights will add up to 120 watts. 120 watts divided by 12 volts will equal to 10 amps. This would still leave 40 amps for landscape light or other 12 volt lights.
There are options on adding 12 volt fans, and 12 volt appliances. If needed I would add extra auxillary 12 volt transformer to power the heaver amperage fixtures …. etc…
I’m thinking this setup would pay for it self with a short time once in use.

what do you think?
What do you think of this setup?
Any questions, let me know.

As I live in an RV, I think I’m qualified to answer. 1. The solar panel actually saps power when not charging. 2. Car batteries don’t last too long when discharged, recharged, etc. 3. the 12V will save energy, but are not as bright as you prpbably need. 4. It can be a royal pain until you get used to it., you would probably be better off using an inverter for power outages, powered off your car.

The ocean floor is home to many unique communities of plants and animals. Most of these marine ecosystems are near the water surface, such as the Great Barrier Reef, a 2,000-km-long coral formation off the northeastern coast of Australia. Coral reefs, like nearly all complex living communities, depend on solar energy for growth (photosynthesis). The sun’s energy, however, penetrates at most only about 300 m below the surface of the water. The relatively shallow penetration of solar energy and the sinking of cold, subpolar water combine to make most of the deep ocean floor a frigid environment with few life forms.

In 1977, scientists discovered hot springs at a depth of 2.5 km, on the Galapagos Rift (spreading ridge) off the coast of Ecuador. This exciting discovery was not really a surprise. Since the early 1970s, scientists had predicted that hot springs (geothermal vents) should be found at the active spreading centers along the mid-oceanic ridges, where magma, at temperatures over 1,000 °C, presumably was being erupted to form new oceanic crust. More exciting, because it was totally unexpected, was the discovery of abundant and unusual sea life — giant tube worms, huge clams, and mussels — that thrived around the hot springs

Life has adapted to many enviroments. There is bacteria living in yellowstone at unimaginable temperatures. In the ancient archean world, life did not need light to thrive. Simple elements like sulfur were needed.

I am designing a solar system for use in Haiti to power 5-6 light bulbs. I am going to be using a marine battery for the storage unit. I know the general watt-hour rating of a marine battery is 1000-1200 watt-hours but I need specific numbers. I already know Ohms law and power formulas. I know the cold cranking amps (cca) and it is a 12V battery.
The battery is 690 cold cranking amps at 0 degees farinhiet. I know the formulas on Ohms law but how do you get watt-hours from cold cranking amps? This is the only ampere marking on the 12V car battery.

1000-1200 watt-hours is pretty specific, how much more do you need? Look at the specs of the battery you will be using. It may be speced in amp hours, just multiply by 12 to get watt-hours.

Take the lower number, 1000 watt-hour, and that means you can operate a 100 watt bulb for 10 hours.

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