A bit of mathematics at the end of the week. The

The first table shows three different installations. The old one is equipped with T8 fluorescent lamps that are at the end of their lifetime and dirty. That is why the luminous flux is so low for the 60W tube. In this situation, the need for a replacement is present. The choice is between a fluorescent tube, a LED tube or a completely new installation with controls. Controls reduce the average power consumption to 1/3 and less of the original load. We can estimate the new fixtures will consume 12W only when connected to controls that detect presence in the hall and reduce the lighting level in areas that are not in use. Each light point will be replaced. It is (often) possible to reduce the number of fixtures with a new installation. The example is concentrating on a one-by-one replacement to make it easier to understand.

The table above shows the sum of all costs for running and maintaining the installation each year and in total. The Retrofit Solution reaches an ROI after 2 years already. The New Installation with controls is going to turn back the high investment after 10 years. Both LED solutions do better than the conventional one, save energy and CO2 emissions. Let’s go green with LED light sources!

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Strips with more LEDs per foot will consume more power.

In short, if maximum energy efficiency is what’s most important to you, choose a light strip with smaller LEDs and fewer LEDs.

In order to ensure your LED power supply doesn’t overheat and fail prematurely, we use this general rule of thumb:

Make sure the total wattage of your LED strip lighting is at least 20 percent less than the power supply’s rated wattage.

For example, if you have an LED strip light that requires 80 watts of power to run, you’ll need a power supply that’s rated for at least 96 watts.

The vast majority of our strips include wattage per foot right on their product pages.

power supplies range from six watts to 1,500 watts for compatibility with a wide variety of LED strip lights.

Let’s take a look at an example:

It’s important to verify that the voltage of the power supply you choose is compatible with the voltage of your LED strip lighting. Also, be sure that the power supply’s input voltage matches that of the location it will be installed in. If you have an LED strip with 12-volt DC operation that you wish to use in a 120-volt AC home wiring system, you’ll need a power supply that includes 120 volts in its input range and has 12-volt DC output.

Another factor to take into account for longer runs is voltage drop. A significant voltage drop is present after a certain distance of LED strip. After this distance, there will not be enough voltage present to light the next length of strip. This varies depending on the type of strip and length being used. Usually, a single-density strip (nine or less LEDs per foot) will need to run back to a power source every 32 13/16 feet (10 meters). A high-density strip (18 or more LEDs per foot) will need to run back to a power source every 16 3/8 feet (5 meters). Please refer to “Max Run” in the specifications table of the strip light to determine how many can be run continuously without a parallel run back to power.

3) the 4) if you want your strip to be dimmable

power supply calculator on the product pages of all of our LED strip lights!

There are a few steps involved:

Step 1: Select your strip and the length you need.

Step 3: Click the green “Power Supply Calculator” tab, and select your product by choosing it from the list OR by pasting the exact part number in the search bar.

Step 4: Enter the number of strips at the desired length you’ve selected and voila! You’ll see a list of all compatible power supplies with the best match at the top of the list!

When dealing with electronics, safety is paramount, and you want everything to work like it’s supposed to. So if you’re still not sure which power supply to use for your LED strip lighting project, just reach out to our technical support team or customer service department at 866-590-3533. Our teams are available from 8:30 a.m. to 8 p.m. CDT Monday-Thursday and 8:30 a.m. to 4 p.m. CDT on Friday.