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I'm trying to implement an LED project which consists of the following components:

  • Mean Well UHP-350-12 / 12 V DC / 350W Power supply
  • GLEDOPTO GL-C008P / LED controller
  • RGBCCT 5050 60LEDs/m, 4 x 5m in length, 6 pins: +12V, R, G, B, C, W, rated 90W/5m

My question: How do I do a power injection for this project? Would that only be done with the +12V line or where would the ground line have to go?

This is a schematic of the project without power injection:

enter image description here

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    \$\begingroup\$ Does this answer your question? What's the best power injection method for addressable LED RGB Strips? \$\endgroup\$ Sep 1, 2023 at 11:25
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    \$\begingroup\$ "Simple" 2-wire power injection only really works for "smart" LED strips. If you want the same benefits for your "dumb" LED strips then you need to run entirely separate 6-wire cables to separate sections of the strip. Running the +12V alone and 'injecting' it will help, but won't have the same effect. \$\endgroup\$
    – brhans
    Sep 1, 2023 at 13:22

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This question has been answered

here: Powering 30m of RGB LED strips?

and here: What's the best power injection method for addressable LED RGB Strips?

In summary: connect the ground and the 12V line from every strip directly to your powersupply

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  • \$\begingroup\$ I'm sorry, it doesn't apply to my case, there is no GND line on the LED strip. \$\endgroup\$
    – Michael
    Sep 1, 2023 at 11:40
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    \$\begingroup\$ Common anode RGBetc, you need to wire up every single strip with +12 V and the individual colours (-). \$\endgroup\$
    – sillis
    Sep 1, 2023 at 12:20
  • \$\begingroup\$ You mean like this? imgur.com/a/GzBYDGN Orange lines meaning: each of the wires connected to the respective color of the other side, so orange line = 6 wires connected color to color. And BTW, the LED controller is rated 5A. \$\endgroup\$
    – Michael
    Sep 1, 2023 at 13:12
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    \$\begingroup\$ @Michael Yes, I think. Like an other commenter said more clearly under your answer "all you have to do is run the +12 and 5 grounds from the controller to each point you want to inject" . – user1850479 \$\endgroup\$
    – sillis
    Sep 1, 2023 at 16:20
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I believe I found a solution, an RGB LED CW amplifier, which basically is a repeater. This should fit my scenario and power all LEDs evenly.

schematics for 4 x 5 m RGB CCT strips with an LED CCT Repeater

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    \$\begingroup\$ You only need one of those "amplifier" devices if you are using so much power that you need multiple power supplies. In this case you have a single power supply, so all you have to do is run the +12 and 5 grounds from the controller to each point you want to inject. \$\endgroup\$ Sep 1, 2023 at 13:50

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