Backbone definition telecom12/15/2023 Undercarpet cable should not be the ITS installer’s first choice. Within the Information Transport Systems Installation Methods Manual (ITSIMM), it states, in part:Īnother form of balanced twisted-pair cable is undercarpet cable (see Figure 5.3). Although undercarpet cabling may be available in category 3 (class C) and higher performance, this cabling distribution method is not considered to be a best practice. Undercarpet cabling is rarely used but may be appropriate when other pathway systems are either not available or not applicable." Additional text in this chapter states: "A transition point is described as a location in the horizontal cabling where flat undercarpet cable connects to round cable. The Telecommunications Distribution Methods Manual (TDMM), 11th edition, states in the work area chapter: The installation shall also conform to 300.4(D) and 300.11.Īlthough article 800.24 does not explicitly state that attaching telecommunications cables to electrical conduit is prohibited, the interpretation of 800.24 typically results in such rulings.įPN: Accepted industry practices are described in ANSI/NECA/BICSI 568-2006, Standard for Installing Commercial Building Telecommunications Cabling ANSI/TIA/EIA-568-B.1-2004-Part 1, General Requirements Commercial Building Telecommunications Cabling Standard ANSI/TIA-569-B-2004, Commercial Building Standard for Telecommunications Pathways and Spaces ANSI/TIA-570-B, Residential Telecommunications Infrastructure, and other ANSI-approved installation standards.Īs a work area best practice, undercarpet cabling is generally not recommended. Such cables shall be secured by hardware, including straps, staples, cable ties, hangers, or similar fittings designed and installed so as not to damage the cable. Cables installed exposed on the surface of ceilings and sidewalls shall be supported by the building structure in such a manner that the cable will not be damaged by normal building use. The NFPA 70, NEC ® 2008 edition states, in part:Ĭommunications circuits and equipment shall be installed in a neat and workmanlike manner. In many such cases, the AHJs typically do not permit such installation methods however, the decision is actually based on the AHJs interpretation of the codes. Another recommendation is to discuss your concerns with the local Authority Having Jurisdiction (AHJ). In a case where a contractor is doing work using J hooks in the hallways and sprinkler pipe and electrical conduit in the individual rooms, one recommendation is to add a statement to your bid documents stating, ".contractors are prohibited from attaching telecommunications cables directly to conduit systems and conduit system hardware." or something similar. Installer 2, Optical Fiber (INSTF) Certification.Installer 2, Copper (INSTC) Certification.Information for Students, Parents, and Educators.Telecommunications Distribution Methods Manual.
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