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sb-multi_media

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Posts posted by sb-multi_media


  1.  

    please refer to the diagram/pic for system setup.    Starting a fairly large job that I was hired on by an electrical contractor.

    He is going to be trenching and adding pole led lighting at the camera locations to the side of the building(diagram).

     

    Ive done many home and business installations however these are the largest outdoor runs ive

    ever had to plan out,.... soo i have a few questions....

     

    1. Im trying to limit the number of cable that I run to the switches from the control room  so im having a 95W poe switch with x2 ports that input the 95W to
    x2 outdoor switches (x7 ip ports at 30w each )in the diagram I show the cable and camera layout in orange. (is this a good idea/layout? has anybody had any experience with this method?)

     

    2. I am planning on using shielded cat6 direct burial from true cable.com for the long outdoor runs we are going to trench the standard 18" depth and the cat6 is going to run in parallel with

    the pole lighting electrical just the typical 120v and plan on using conduit at about 8-10" gap in between cat6 and electrical both in conduit of course.  (do i really need to use the shielded since
    im going to run the cable in conduit can i just use utp direct burial in pvc conduit at the 18"depth seperated 8-10" from the electrical?) ive been reading that shielded cat 6 is hard to work with
    and needs to be properly grounded? the runs are long but not something un reasonable for a poe camera run. will these lengths really cause a large enough static build up to where i would need to ground
    them? also isint the utp direct burial already grounded in the conduit i would assume soo this would only leave the 120v run in parallel for about 30ft-100ft-then only about another 100ft will this be an issue
    if i decide to use the utp direct burial in the conduit?)

     

    3. Grounding?
    so i definitley want the main cat6 lines coming from the control room to the outside to be grounded. if i use shielded just for these two cable runs with
    grounded rj45 connectors into a switch that is grounded does this properly ground the shielded? does this also properly ground the external switches
    or should i ground these seperatley would this cause ground loops? is grounding really that big of an issue ive been installing cameras for about 3 years
    now and ive never had any issues with having to worry to much about the grounding and there is a big difference between installers who really have field experience
    and those that dont. soo Please hopefully ive given enough information with the diagram.. if grounding is an issue please how can i properly ground?
     

     

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