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Running RGB with Electrical Wire

Discussion in 'Archived Threads 2001-2004' started by armin, May 18, 2002.

  1. Message #1 of 5 May 18, 2002
    armin

    armin Extra

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    Hi,

    I have run 2 runs of 75 ohm RGB inside a ceiling joist but there is also potlight wiring VERY close but not touching the RGB run. Will there be any interference or signal loss dur to the proximity of the 14-2 electrical wire ?

    thanks,

    armin
     
  2. Message #2 of 5 May 18, 2002
    Chu Gai

    Chu Gai Lead Actor

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    doubtful if it will provided your cable is adequately shielded. electromagnetic radiation is subject to the inverse square law. basically if you double the distance, the intensity of the radiation goes down by 1/4. oftentimes, interference can be corrected for by simply a slight movement of one of the sources from the other. in the realm of coax shields...braided is superior to foil...often they're combined and there are quad shielded versions of coax that provide superior rejection to noise, if noise in your environment is an issue that is. the greater the %braiding the greater the shielding effect. good luck!
     
  3. Message #3 of 5 May 19, 2002
    Bob McElfresh

    Bob McElfresh Producer

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    You would like to avoid several feet of wires running close together. The longer parallel-path you have, the greater the chance of interference.

    If there is a problem, just turn off the pot lights when you watch your system. If no electricity is flowing - no interference.
     
  4. Message #4 of 5 May 19, 2002
    Bill_Weinreich

    Bill_Weinreich Second Unit

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    Braided and foil shielding of coax can really do little in the effectiveness of 60Hz interferrence. The best bet would be seperation. Keeping them >6" apart and if they must cross, do so at a 90deg angle. If it isnt too late, the next best solution for 60Hz rejection is steel conduit.

    Bill
     
  5. Message #5 of 5 May 19, 2002
    Phil A

    Phil A Producer

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    The best thing would be to separate them. But you can also buy copper shielding tape that 3M makes in various widths that you can get from distributors like Newark or Allied that is very reasonable. So I would try for a little separation and where it was minimal, I would try some of the tape.
     

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