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Thread: Armored Fiber Optic Cable Grounding

  1. #1
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    Armored Fiber Optic Cable Grounding

    I have some Corning armored direct bury fiber optic cable, its about 1/2" OD. This is my first application of armored FO cable...what kind of bonding clamp do I need for the cable sheath?
    I don't see anything in the Corning catalog
    Moderator-Washington State
    Ancora Imparo

  2. #2
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    It’s fiber optic why does it need grounding?

  3. #3
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    Quote Originally Posted by mopowr steve View Post
    It’s fiber optic why does it need grounding?
    Armored Metal Clad....the sheathing.
    "Electricity is really just organized lightning." George Carlin


    Derek

  4. #4
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    Best I could find out is that this clamp....maybe...is what is needed.


    https://www.discount-low-voltage.com...RoCKRcQAvD_BwE

    Or this kit which the above and more.

    https://www.discount-low-voltage.com...xoCNkAQAvD_BwE

    I did not go to the 3M website and verify. Some Corning person mentioned them in an article. Lost the link, sorry.
    "Electricity is really just organized lightning." George Carlin


    Derek

  5. #5
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    Without seeing the cable I would say that the second of those shield bond clamps is what you need. I've used the first on copper cables many times which their video shows you how to do. I have never done fiber and there doesn't seem to be a video for it. I'm sure it's similar but the description talks about the strength members and there are extra parts.

    It just might be that you can use the first one depending on your installation.

    -Hal

  6. #6
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    What’s likely to energize it. And if something did there is no effect to the optic strand. Is it just for rigidity?

  7. #7
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    Quote Originally Posted by mopowr steve View Post
    What’s likely to energize it. And if something did there is no effect to the optic strand. Is it just for rigidity?
    Some of these are listed for indoor/outdoor, so you don't have a demarc box. You don't want something happening at building A to get to building B and vice versa.

  8. #8
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    I've never seen armored FO cable so I can only surmise that it's there for physical protection. I do suppose that there are applications that have electronics at one or both ends that could use the armor for a ground path or bond.

    -Hal

  9. #9
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    Quote Originally Posted by hbiss View Post
    I've never seen armored FO cable so I can only surmise that it's there for physical protection. I do suppose that there are applications that have electronics at one or both ends that could use the armor for a ground path or bond.

    -Hal
    See here for an example. A similar product is being used on a current project of ours.

  10. #10
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    See where it say’s “requires no grounding or bonding”

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