UL 13-2015 pdf download

UL 13-2015 pdf download.Power-Limited Circuit Cables.
1 .1 0 These requirements do not cover cables that contain conductors for electric-light, power, or Class 1 circuits. These requirements do not cover optical-fiber cables that do not contain any electrical conductors. These requirements do not cover communication cables (see the Standard for Communications Cables, UL 444) or cables for power-limited fire-alarm circuits (see the Standard for Cables for Power-Limited Fire-Alarm Circuits, UL 1 424). These requirements do not cover vault-lacing cable, which is for use in concrete as part of a theft-alarm system. 1 .1 1 These requirements do not cover the optical or other performance of any optical-fiber member or group of such members. See 8.3. 2 Units of Measurement 2.1 In addition to being stated in the inch/pound units that are customary in the USA, each of the requirements is also stated in units that make the requirement conveniently usable in countries employing the various metric systems (practical SI and customary). Equivalent – although not necessarily exactly identical – results are to be expected from applying a requirement in USA or metric terms. Equipment calibrated in metric units is to be used when a requirement is applied in metric terms. 3 References and Terms 3.1 Wherever the designation ″UL 1 581 ″ is used in this wire standard, reference is to be made to the designated part(s) of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1 581 . Whenever the designation ”UL 2556” is used in this standard, reference is to be made to the designated parts of the Standard for Wire and Cable Test Methods, UL 2556. 3.2 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. 3.3 Nylon designates a thermoplastic material whose characteristic constituent is a polyamide formed by the condensation of dibasic organic acids and diamines.
4 Materials 4.1 Each material used in a cable shall be compatible with all of the other materials used in the cable. 4.2 Power-limited circuit cable shall comply in all respects with the applicable requirements for construction details, test performance, and markings. 5 Conductors 5.1 Conductors shall comply in size (see 5.2) and material with Table 5.1 . The nominal diameters of solid and stranded conductors which are 30 – 6 AWG conductor size, that are indicated in Table 5.2 and Table 20.1 in UL 1 581 when conductor size is smaller than 30 AWG, are to be used in calculating the dimensions required for various parts of the cable when using Tables 1 3.1 , 1 3.2, 1 3.3, 1 4.1 , 1 4.2, 1 5.1 , and 21 .1 . The length of lay of the wires (strands) of a bunch-stranded conductor shall not exceed 20 times the calculated diameter over the assembled conductor for 1 9 – 6 AWG conductors and shall not exceed 30 times the calculated diameter over the assembled conductor for 30 – 20 AWG conductors. For a bunch-stranded member of a rope-lay conductor, the length of lay of the individual strands within the bunch shall not be more than 30 times the outside diameter of the member. The length of lay of the member in the outer layer of a rope-lay conductor shall be 8 – 1 6 times the outside diameter of that layer.
6 Metal Coating 6.1 If the insulation adjacent to the copper conductor is of a material that corrodes unprotected copper in the test Copper Corrosion, described in UL 2556, the conductor shall be covered with a coating of tin complying with ASTM B 33, of a tin/lead alloy complying with ASTM B 1 89, of nickel complying with ASTM B 355), of silver complying with ASTM B 298, or of another metal or alloy (evaluation required). 6.2 For silver plated steel conductors of a specific diameter, the plating thickness of silver or combined silver over nickel plating shall not be less than that specified for silver coating thickness of 1 .25 percent as defined in ASTM B 501 – 93, Standard Specification for Silver-Coated, Copper-Clad Steel Wire for Electronic Application, Table 1 .UL 13-2015 pdf download.