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How much grounding do you need?

Discussion in 'Electrical Engineering' started by David Gunther, Nov 7, 2003.

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  1. Hello,

    I hope some one can give me a good answer to this. If you ground the
    equipment rack and all the equipment is properly fastened to the the rack,
    will that provide enough protection or should you ground each piece of
    equipment too?

    The company I work for is currently thinking about grounding each piece of
    communication equipment with 6 AWG wire even though the rack is already
    properly grounded. What are your thoughts on this?

    Thanks,
    Dave
     
  2. SQLit

    SQLit Guest

    I used to work with an MT BELL engineer. He said that more diameter is not
    as good as more surface area when it comes to high frequencies. Think about
    using these http://www.amgndsys.com/
    or making your own with welding cable. He showed me time and time again
    that a 4 inch by 1/4 plate around a room did better than all the ground
    cables we had been installing. We even installed a bunch of 8 inch wide
    copper foil in one server room. I do assume that this is for equal
    potential and not for the circuit. Right.

    I always run a ground wire, metal conduit and then braided straps. Have not
    had any problems yet. More is better the faster you go or the smaller your
    trying to measure. IMO
     
  3. jim

    jim Guest

    Agreed, multiple ground paths are best. Certain length conductors act as
    open circuits for very high frequency signals. In this respect, the
    chassis ground is the better ground, as long as the joints in the chassis
    are electrically conductive.
     
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