UL 444-2021 pdf download – Communications Cables.
1 Scope 1.1 This standard applies to 60 – 250°C single- or multiple-conductor jacketed or unjacketed, integral or nonintegral cables and single or multiple coaxial cables for telephone and other communication circuits such as voice, data, and audio for on-premise customer systems. These cables are may contain one or more optical fibre members. For the purpose of this standard, a coaxial cable or coaxial member conductor is a single conductor with a shield. For the purpose of this standard, a single- or multiple- conductor unjacketed cable is a cross-connect wire. 1.2 This standard applies to communications cables that are intended primarily for installation in accordance with Section 60 of the Canadian Electrical Code Part I, and Article 800 of the National Electrical Code (NEC), ANSI/NFPA 70. They are rated for 300 Vapplications, but are not so marked. Note: See Annex A for a complete list of wire types covered by this Standard and the specific electrical codes for which they are intended. 1.3 This standard does not apply to communications cords. 1.4 In Canada, the Type “-CI” circuit integrity markings are not recognized by the Canadian Electrical Code, Part I. In the US, Type CMH is not recognized in the NEC. 1.5 If a value for measurement is followed by a value in other units in parenthesis, the second value may be only approximate. The first stated value is the requirement. 2 Reference publications Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard.
ANSI (American National Standards Institute) Z136 Series Safe Use ofLasers ANSI/ASTM (American National Standards Institute/American Society for Testing and Materials) E230/E230M Standard Specification and Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples ANSI/NFPA (American National Standards Institute/National Fire Protection Association) NFPA 70 National Electrical Code ASTM (American Society for Testing and Materials) B33 Specification forTinned Soft orAnnealed CopperWire forElectrical Purposes B189 Specification forLead-Coated and Lead-Alloy-Coated Soft CopperWire forElectrical Purposes B298 Specification forSilver-Coated Soft orAnnealed CopperWire B355 Specification forNickel-Coated Soft orAnnealed CopperWire B566 Standard Specification forCopper-Clad Aluminum Wire B869 Specification forCopper-Clad Steel Electrical ConductorforCATVDrop Wire D5374 Test Methods forForced-Convection LaboratoryOvens forEvaluation ofElectrical Insulation D5423 Specification forForced-Convection LaboratoryOvens forEvaluation ofElectrical Insulation