Malibu Low-Voltage Lighting Transformers with Timers.
Malibu 100-watt Low Voltage Power Pack provides safe 12-volt power to your landscape lighting system. Features electronic controls and adjustable light sensor for dusk to dawn operation, dusk ON, timed OFF settings, or always ON programming. The light sensor can be adjusted to accomodate for nearby light sources such as porch lights or street lights. The sensor also features a 3 minute lock-out control to prevent the lights from cycling ON and OFF due to sudden changes such as lightning or car headlights. The new ergonomic air cooled design is lighter and easier to use than traditional power supplies. The power pack also features tool free cable connections that are secured by large thumb screws, ensuring solid contact with your low voltage cable. Malibu is the leader in landscape lighting, providing quality outdoor living products for over 40 years.
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| Voltage Loss and low voltage lighting for landscape systems | |||||||||||||||||||||||||||||||||||||||||||||
How to use large transformers: First of all there are three important facts to consider before loading any transformer.
All three must be considered when designing a low-voltage system system. Larger transformers need to be used in a manner that will allow all lighting fixtures on a specific run to evenly illuminate. In some cases there will need to be more than one line out from the transformer. An example of a system using 2 output lines from the transformer would be as follows:
The 600 watt transformer has two 300 watt outputs. Use these 2 separate outputs to split the load instead of trying to run 600 watts on one run. If the loads are not split the system will not work. The 900 watt transformer has three 300 watt outputs. |
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| Voltage Drop Chart Maximum Recommended Distance from the Transformer
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Low-voltage, systems have several advantages for the home owner: Most important, low-voltage equipment is easier to install. Except for the transformer that's connected to a 120-volt circuit, the entire system runs on harmless 12-volt current. Low-voltage wiring is lightweight and can be laid on the ground or buried just below the surface. Another advantage of low-voltage equipment is that it can be relatively inexpensive. And, when you do the job yourself, the bottom line for low-voltage looks even better. Not only can the capital outlay for a standard high-voltage system be much greater, but you may need to hire a pro for part or all of the installation.
You must size your low voltage transformer to match the combined wattage of the lights or lamps to which the transformer is to supply power plus approximately 25% more for the line.
Sizing your Transformer Example: If you buy a system that comes with six fixtures and each fixture has a 12 watt lamp, then you have a minimum need of 72 watts (12 x 6 = 72). The line itself degrades the wattage as well so as a general rule of thumb you will need to increase it by 25% more. Therefore you'll need at least a transformer that can handle about 90 watts. So a 100 watt transformer would be the minimum needed. If you plan to add additional fixtures in the future, you may want to increase the wattage of the transformer or purchase additional transformers as needed. Keep in mind that the voltage drop over long distances is more pronounced in a low-voltage system, therefore, using wire that's too light (skinny) can affect the output at the lamps and this may adjust the wattage need of your low voltage transformer.
Other products in the category Landscape Lighting Fixtures - Solar, LED, & 12-V / 12-Volt Transformers - Photo Cell & 24 hr Timers:
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