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| | All, I am trying to find a standards reference (maybe in TIA/EIA-568-B) to removing low voltage (Cat 5E) cables when decommissioned. Specifically, I have a situation where a contractor was told to remove cables from a workspace and did so by cutting them and coiling the now useless cable in the ceiling. It is my stance that the entire cable should have been removed, up to the patch panel and including the labeling for such. This is definitely common sense, I would assume best practice, and would be surprised if it isn't spoecifically referenced somewhere. Any help is appreciated. |
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| | From the Nec 2002 The definition of abandoned cable, as found in paragraphs 800.2 and 770.2 of the NEC 2002 Book, states "....Installed communications cable that is not terminated at both ends at a connector or other equipment and not identified "For Future Use" with a tag." For copper cable, paragraph 800.52(B) of the NEC Code states "...The accessible portion of abandoned communications cables shall not be permitted to remain.." Additionally, paragraph 800.52(1) states that abandoned cables in vertical runs shall not be permitted to remain. Article 770 states the same requirements for optical fiber risers and horizontal cables.
Future Technology Consultants
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| | In my humble opinion, Eric is right on the money with his post. That article in the NEC is pretty clear. If the contractor is still giving you a hard time about it, have the AHJ (wiring inspector and/or fire department) back you. Of course, the danger in getting them involved is that if the contractor can somehow stake a claim that it isn't in their scope of work, you may end up being forced to pay someone to remove it. |
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| morgenroth (4/18/2008)
From the Nec 2002 The definition of abandoned cable, as found in paragraphs 800.2 and 770.2 of the NEC 2002 Book, states "....Installed communications cable that is not terminated at both ends at a connector or other equipment and not identified "For Future Use" with a tag." For copper cable, paragraph 800.52(B) of the NEC Code states "...The accessible portion of abandoned communications cables shall not be permitted to remain.." Additionally, paragraph 800.52(1) states that abandoned cables in vertical runs shall not be permitted to remain. Article 770 states the same requirements for optical fiber risers and horizontal cables. This is carried forward in NEC 2008, as well. 800.2 Definitions: "Abandoned Comminucations Cable: installed communications cable that is not terminated at both ends at a connector or other equipment and not identified for future use with a tag." From the 2008 Handbook, following that definition is the following commentary, "The term abandoned communications cable applies to 800.25, which requires removal of accessible abandoned communications cable. Abandoned cable increases fire loading unneccessarily, and, where installed in plenums, it can affect airflow. Similar requirements can be found in Articles 640, 645, 725, 760, 770, 820, and 830." 800.25 Abandoned Cables, says: "The accessible portion of abandoned communications cables shall be removed. Where cables are identified for future use with a tage, the tag shall be of sufficient durability to withstand the environment involved." From the commentary, "The term accessible is defined in Article 100." Basically, if the cable can be removed without damaging the building structure or finish, the cables need to be removed.
Doug Weis, RCDD, ESSdoug.weis@hei-eng.com |
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| | Please keep in mind the "intent" of the abandoned cable section of the NEC. And the intent is simple per Phil Janeway Bicsi rep to the NEC committee: To eliminate unwanted and unnecessary fuel for fires and to increase air circulation in plenum ceilings. Yes, our cables (and others) are piling up daily and causing unnecessary blockage Make sense to me j adams Bicsi instructor |
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| An experienced contractor will always include in his RFP response a statement to the effect that they are not responsible for making corrections in existing infrastructure to meet Code or Standards. It is nearly impossible to quantify in a bid, without a serious investment of time for site survey. It is not reasonable to expect a contractor to include in its bid an unquantifiable amount of work. Did the project documents accurately describe/indicate the amount of demolition required? Was the contractor required to attend a pre-bid meeting and perform a site survey? Did the engineer perform a site survey and make his notes available to the contractor prior to bid?
Scott Bennett, RCDD
Network Foundation Design, LLC |
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