1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): DUZXStandard Number: UL 444Standard Title: Standard for Communications CablesEdition Date: January 20, 2017Edition Number: 5Section / Paragraph Reference:Subject: Use of an Additional 14 AWG Conductor
3、 in a Multi-conductorCommunications CableDECISION:Table 4Conductor metal and application(See Clause 5.1.6.)Conductor metal Conductor size (AWG) ApplicationCopper 30-16* Multiple-conductor or Coaxial CableCopper 30-16 Cross-connect Wire (Cable)Copper 15-6 Coaxial or Audio CableCopper-clad steel or Co
4、pper-cladaluminum30-6 Coaxial Cable only* Conductors 146AWGarepermitted to be used as an additional single conductor in amultiple-conductor cable provided the cable is marked as described in Par. 9.1.8.9.1.8 For a cable, other than a coaxial cable, employing 15 - 6 AWG copper conductors, the followi
5、ngwording shall be provided: “For use in audio applications only.” For a cable employing a single 14 6AWG single conductor, in addition to the conductors used for the communications circuit, the followingwording shall be provided “ _ AWG conductor shall be used for equipment grounding only” in addit
6、ionto the AWG size of the conductors used for the communications circuit. The blank to be filled in with theAWG size of the single conductor.RATIONALE FOR DECISION:There are applications where cables are routed between switchboards of industrial machines and there isa need to provide grounding/bondi
7、ng of the products in addition to providing the Communication Circuit.In such applications, a communication cable such as type CM would need to include an integral 14AWGor larger size conductor to provide grounding/bonding in addition to other conductors used for theCommunication circuit. Additional
8、ly, a grounding conductor of 14 AWG or larger is permitted forinstallation in accordance with the NEC (NFPA 70 800.100).Copyright 2018 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL LLC, in performing its functions in accordance with
9、 its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of UL LLC. in practically applying therequirements of the standard. They do not r
10、epresent formal interpretations of the standard underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, includin
11、g consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the CertificationRequirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 444 -2-
