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LED strips underwater

Discussion in 'LEDs and Optoelectronics' started by camilozk, Sep 27, 2018.

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  1. camilozk

    camilozk

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    Apr 20, 2014
    Hi!

    there are some videos in youtube (link below) of people putting led strips underwater to prove that there is no drastic problem in doing so. also, somebody told me some days ago, using 12v led bulbs, that they have actually had this bulbs in containers full of water for several days and this was also not a problem.

    why is this not a problem, and would it be different in the case of a digital led strip? (ws2811 or similar?)





     
  2. Audioguru

    Audioguru

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    Sep 24, 2016
    Several days is nothing. Several months will cause severe corrosion especially if the water is not distilled.
    Tap water has all kinds of nasty things in it.
     
  3. camilozk

    camilozk

    116
    4
    Apr 20, 2014
    applies also for digital strips?
     
  4. MidNor

    MidNor

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    1
    Sep 24, 2018
    Led atrips are usually heavily isulatein especially the ones i took out of roof tubes.
    Thats propably why they opperate under water.
    As long as you can prevent a short it will work.
    Please be careful they may pull a lot of current
     
  5. Audioguru

    Audioguru

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    Sep 24, 2016
    Water corrodes many metals.
    If the LED strip has exposed metal that can corrode, then corrosion will ruin it.
     
  6. camilozk

    camilozk

    116
    4
    Apr 20, 2014
    my main question is, why there is no short circuit
     
  7. Externet

    Externet

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    Aug 24, 2009
    What do you call 'short circuit' ?
     
  8. Audioguru

    Audioguru

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    Sep 24, 2016
    Pure water is an insulator. Tap water conducts a little. Salt water conducts more but is far from a short circuit.
     
  9. Audioguru

    Audioguru

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    Sep 24, 2016
    I think a few thousand volts on high surface area probes in salt water is pretty close to a short circuit.
     
  10. camilozk

    camilozk

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    Apr 20, 2014
    so, what I infer is that water is not conductive enough to short circuit low voltage´s systems, is that right?
     
  11. Audioguru

    Audioguru

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    Sep 24, 2016
    Correct. You can simply measure the resistance of water with a multimeter. The area of the probes and distance apart affects the resistance.
     
  12. camilozk

    camilozk

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    4
    Apr 20, 2014
    thanks again!
     
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