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Monday 25 April 2011
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Saturday 16 April 2011
How to Create a Large LED Light Installation
For safety reasons and because of the nature of LED light fixture design, LED Strip Lights, Light Bars, and Module Light strings have recommended limitations for the length of run. But it’s relatively easy to make a safe but effective large LED installation by keeping the following things in mind.
1) Observe run limits for your LED fixture.
At the bottom of this page, you’ll find a table with the run limits of feet and fixtures for all our strips, bars, and module lights. (A “run” is defined as a section of LED strip light or daisy-chained group of fixtures that are running continuously from a single power source.) Observing run limits will result in a safer installation, and help prolong the life of the lights. (Although 12V LEDs can operate in a range of about 10V to 14V, less or more voltage will drastically reduce the life of the bulbs, and cause them to be dimmer than normal.)
2) Don’t overdrive a 12V power source.
Although a 36W Plug-In Adapter can power 50W of strip light, doing so will cause the adapter to overheat, which can create a fire. For this reason–and because LED fixtures draw slightly more power than the sum of their bulbs–we recommend using 80% of a power supply’s capacity.
3) Use the right amount of power and the right gauge wires to avoid voltage drop.
The wire gauge indicates the thickness of a wire. A lower number is heavier, and a higher number is lighter. The wire gauge of 12V power wires and parallel run wires is also a factor in large installations. (See the first diagram below for an example of a parallel run.) When lighting is at a certain distance from its power source, something called voltage drop occurs. “Voltage drop” is the gradual diminishing of voltage along the length of the wire as electricity travels away from a power source. Voltage drop happens when a light or appliance is located far from the power source.
You can avoid voltage drop by using a voltage drop calculator, which helps you find the right wire gauge based on the number of fixtures in your installation, how they are spaced, and the distance between the power source and the fixtures.
4) Supply sufficient power.
Another way to get power to a distant fixture is to use a power supply with a higher wattage than necessary. Supplying more power at the source means more will reach the fixture after traveling through the wires. In general, for optimum performance we recommend that a driver not be loaded to more than 80% of its full capacity.
5) Get creative!
Fortunately, there are several ways to install LED lights in large installations that are safe and efficient, just by placing power supplies and using additional wiring. In the next pages, we’ve made wiring diagrams that give examples of how to make large installations. Our example wiring diagrams use strip lighting, but the same layout ideas apply to LED light bars and module lights.
http://www.cablehdtvs.com/
1) Observe run limits for your LED fixture.
At the bottom of this page, you’ll find a table with the run limits of feet and fixtures for all our strips, bars, and module lights. (A “run” is defined as a section of LED strip light or daisy-chained group of fixtures that are running continuously from a single power source.) Observing run limits will result in a safer installation, and help prolong the life of the lights. (Although 12V LEDs can operate in a range of about 10V to 14V, less or more voltage will drastically reduce the life of the bulbs, and cause them to be dimmer than normal.)
2) Don’t overdrive a 12V power source.
Although a 36W Plug-In Adapter can power 50W of strip light, doing so will cause the adapter to overheat, which can create a fire. For this reason–and because LED fixtures draw slightly more power than the sum of their bulbs–we recommend using 80% of a power supply’s capacity.
3) Use the right amount of power and the right gauge wires to avoid voltage drop.
The wire gauge indicates the thickness of a wire. A lower number is heavier, and a higher number is lighter. The wire gauge of 12V power wires and parallel run wires is also a factor in large installations. (See the first diagram below for an example of a parallel run.) When lighting is at a certain distance from its power source, something called voltage drop occurs. “Voltage drop” is the gradual diminishing of voltage along the length of the wire as electricity travels away from a power source. Voltage drop happens when a light or appliance is located far from the power source.
You can avoid voltage drop by using a voltage drop calculator, which helps you find the right wire gauge based on the number of fixtures in your installation, how they are spaced, and the distance between the power source and the fixtures.
4) Supply sufficient power.
Another way to get power to a distant fixture is to use a power supply with a higher wattage than necessary. Supplying more power at the source means more will reach the fixture after traveling through the wires. In general, for optimum performance we recommend that a driver not be loaded to more than 80% of its full capacity.
5) Get creative!
Fortunately, there are several ways to install LED lights in large installations that are safe and efficient, just by placing power supplies and using additional wiring. In the next pages, we’ve made wiring diagrams that give examples of how to make large installations. Our example wiring diagrams use strip lighting, but the same layout ideas apply to LED light bars and module lights.
An example of how to install LED strip lights in a very long, continuous straight line, as you would in a hallway or along a large wall. This type of installation is called a parallel run. Wire gauge here is given as en example; consult a voltage drop calculator and building codes for wire recommendations.
An example of how to install LED strip lights in a large room. Note the two ways of powering multiple sections of strip with one source: 1) Placing the power source in the middle of two runs, with runs going in opposite directions; 2) Placing the power sources at opposite ends of the two sections so that the runs join seamlessly in a corner.
How to Choose the Right Connector for LED Lights
Here you’ll find a list of our most popular connectors and what each of them does. Whether you’re using outdoor or indoor LED lights, and powering them with an adapter or driver, you’ll find the right connector.
Currently our Side View LED Strip Lights and Waterproof RGB LED Strip Lights can be connected to a power source only by soldering lead wires onto them. Soldered lead wires connect to a plug-in adapter through the LED Adapter Splice Cable, and connect directly to the wires on a hard-wired power driver.
Currently our Side View LED Strip Lights and Waterproof RGB LED Strip Lights can be connected to a power source only by soldering lead wires onto them. Soldered lead wires connect to a plug-in adapter through the LED Adapter Splice Cable, and connect directly to the wires on a hard-wired power driver.
How to Connect RGB LED Strip Light or Light Bar to Power Source
Here are instructions for how to connect our RGB LED Strip Lights and Light Bars to a 12V DC adapter. (“RGB” stands for “red green blue”, and is a short way of saying “full color,” “color-changing,” and “multi-color.”) The accessory that’s connecting the bar to the Wiser RGB Color Controller is the RGB LED Light Bar Splice Cable, which has a connector unique to our RGB light bars at one end, and four wires at the other: red, green, blue, and a common positive, for powering the bar. The connector that hooks our RGB Strip Lighting up to a color controller is called the Multi-Color RGB LED Flexible Light EZ Connector. (Please note that, at step 4 of these instructions, where you are inserting the strip into the EZ connector, the polarity of the strip must match the polarity of the connector. In other words, plus to plus and minus to minus. If you slide the strip into the connector and it does not light up, simply use the other end, as the polarities didn’t match.)
Click the icon to view a PDF of these instructions.
Here are the instructions in video form, with some explanatory text.
 The Multi-Color RGB LED Flexible Light EZ Connector |  First pull the brown tab out. |
 |  Notice the strip is facing away from the brown tab. |
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If the strip is securely connected but does not light up, try connecting the other end, as the + and – of the strip must match that of the connector. | |
 The RGB LED Light Bar Splice Cable |  |
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Click the icon to view a PDF of these instructions.Here are the instructions in video form, with some explanatory text.
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How to Choose a Power Source for LED Lights
How do you choose a power source for LED lights? Of course there’s no correct answer to this question, but there some definite things to consider. Most of our LED light fixtures are 12V or 24V DC. These low-voltage LEDs can be powered by either a plug-in adapter or a hard-wired power driver. (If you need to know how much power you need for a given number of feet of strip light or of fixtures, see our page How Much Power Do I Need.) To choose whether to use an adapter or driver for your LED light installation, here are some basic questions you should answer first.
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