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Wednesday, December 7, 2011
Solar Solutions For Landscape Lighting
Outdoor night lighting along paths and stairways provides safety, beauty and convenience. It directs company to your door, keeps guests from stumbling in the dark and can highlight an artistic landscape.
Getting electricity to appropriate places in your yard can be a barrier to installing landscape lighting. It can be costly and time-consuming to dig trenches and gardening tools can cut through buried wires. Improper electrical connections are another potential hazard.
Solar-powered lights, which use DC electricity generated from sunshine, are a great landscape lighting option (Figure 1). They require no wiring and can be easily relocated. They have photo sensors and automatically switch off and on, day and night. Best of all, solar-powered lights require no burning of fossil fuels and generate no carbon dioxide or pollutants.
SOLAR PHOTOVOLTAIC (PV) ELECTRICITY
Beach sand is made of silicon, the second most abundant element on Earth. Many PV cells are made from a purified form of silicon.
PV cells have two sides, one with extra electrons (negatively charged) and one with a shortage of electrons (positively charged). When sunlight hits it solar energy detaches electrons from the negative side of a PV cell to its positive side. This begins a flow of electrons through tiny wires connected to each cell.
Electrons flowing from all the PV cells form one circuit, generating direct current (DC) electricity. This energy is used to recharge batteries built right into landscape lights, where it is stored until night and then used to power the lamps.
Electrons are the only things that move in a PV cell. Because there are no moving parts to break, cells can last over twenty years.
SOLAR PV LIGHTS: TYPES
There are many kinds of PV lights. Use small, red-glowing safety lights to line driveways and brighter, 4-watt florescent lights (comparable to 16-watt incandescents) to mark gates or dock ramps (Table 1). For shady spots there are lamps with detachable PV panels. There are even PV security lights that are triggered by heat or motion. Choose those that suit your landscape and your needs.
SOLAR PV LIGHTS: TIPS
To work well, PV cells need as much sunlight as possible during the day. Most current PV landscape lights have cells built into their lamp. These must be positioned to receive the fullest sunlight. Walk through your yard several different times during a sunny day to ensure that your selected installation sites receive enough sunlight.
Install lamp stakes firmly in the ground before attaching lamps. Never apply force to the PV panel itself.
PV lights are easy to install - and easy to remove. If theft is a concern install your lights securely. Drill two or three holes, large enough for a 3-inch galvanized nail, through the stake near the pointed end. Fill a wide plastic pot with cement. Stand the stake - with the nails - in it and wait for the cement to harden. Bury in the selected site and attach the lamp appropriately to highlight pool plants for example.
PV landscape lights should come with at least a 12-month warranty.
Sunday, December 4, 2011
The Basics on How to Install Those Low Voltage Landscape Lighting Luminaire Sets
Sometimes, even the most eye-pleasing outdoor arrangements cannot be fully appreciated in the daytime especially when the sun is up and about. There is probably no better time of the day to enjoy such nice ambiance than under the blanket of stars at night. This is very much possible with the aid of low voltage landscape lighting luminaire set.
What makes low voltage lights great is how safe they are for the regular guy to work with. There is not much to worry about getting shocked by the household's current.
To do everything right, here are the basic steps on installing these lights at home.
1. It is essential to start off with the planning stage. This involves determining the specific locations of each light and its outdoor power source. Since low voltage lighting gives lesser illumination, each lighting fixture should be 8 to 10 feet away from each other.
2. When purchasing the low voltage landscape lighting luminaire kit to use, the power required by each light is added to each other. The total amount should be the minimum capacity of the low voltage transformer to use. It is wise to oversize the transformer a bit in order to accommodate any additional lights in the future.
3. When all is ready, the wire can then be run from the power source to the lights following the planned route. The lights are then individually installed with the aid of the written instructions from the manufacturer.
4. After the lights have been installed, install the transformer to the power source. This is done simply by stripping 1/2 inch of each wire and attaching the stripped wire on the transformer. The attachments should be firm enough to assure that the light bulbs end up working the way they should.
5. It is then time to check out if all the lights come on, and adjustments can be made if the clips are not attached firmly. The cable should be hidden in a trench measuring about 2 to 3 inches. One should never forget to set the timer on the transformer so that the whole thing lights up just in time.
Setting up a low voltage landscape lighting luminaire is something anyone can do. However, it requires a huge amount of safety measures as well as being keen in details in order to avoid any unnecessary and negative results. Otherwise, one might end up with a burned property instead of a pretty lawn.