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Thread: Power injection wiring conformation

  1. #1
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    Default Power injection wiring conformation

    I am working on a project that will be using 9 strands of 36 pixels. I have planned on breaking that up into three power supplies to drive it. I have attached a quick drawing as to how I think I should wire it up. Can you please verify my thinking? I want to make sure I have it right. Thanks!
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  2. #2
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    Default Re: Power injection wiring conformation

    Looks OK to me. Just make sure wire sizes can handle the summed current from all the connected branches (both positive and negative). Also make sure the common ground connects to the power source for the controller as well.
    Ed
    Happily retired

  3. #3
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    Default Re: Power injection wiring conformation

    Thanks for the second set of eyes Ed!

  4. #4
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    Default Re: Power injection wiring conformation

    Is there a reason to use 3 power supplies?
    Inventor of the "LED Keeper"

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  5. #5
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    Default Re: Power injection wiring conformation

    With only 324 pixels, I too must ask why 3 power supplies?
    Live, Laugh, Love.

  6. #6
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    Default Re: Power injection wiring conformation

    This is for a wreath, I have limited space to put supplies so I went with smaller supplies, 12v 60w 1.4a. These are the same supplies is use to run pairs of my arches. Each of them has 56 pixels so the supply works great for 112 pixels. Thinking my numbers were about right. Too much?

  7. #7
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    Default Re: Power injection wiring conformation

    If 60 watts. they should be 5 amp power supplies which should be at the limit for 100 pixels at full power but there is no safety factor. If running at reduced intensity (80% or less), should be no problem. Also make sure the power feeds to the the pixels are fused (I didn't see that in your sketch).
    Ed
    Happily retired

  8. #8
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    Default Re: Power injection wiring conformation

    Wouldn't be easier to put a single, larger, PSU somewhere off the wreath and run the 12V power to the wreath rather than run a 120 power line (if not 3) to the wreath? also seems that trying to hide 3 PSU would be as difficult as a single larger PSU
    Matt

  9. Likes Dennis Cherry liked this post

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