UL 83A:2016 pdf free download – STANDARD FOR SAFETY Flouropolymer Insulated Wire.
4.2.4.1 The average and minimum thickness of the insulation shall be as shown in Tables 9 — 12. Compliance shall be determined in accordance with the test, Thickness, in UL 2556.
4.2.4.2 The insulation shall have a circular cross-section, with the insulation applied concentrically about the conductor and fitting tightly on the conductor or over any separator.
4.2.5 Physical properties of insulation
4.2.5.1 General
4.2.5.1.1 The tensile strength and ultimate elongation of the insulation, before and after aging, shall be as specified in Table 13.
4.2.5.2 Test requirement
4.2.5.2.1 Compliance with 4.2.5.1.1 shall be determined in accordance with the test, Physical properties (ultimate elongation and tensile strength), in UL 2556.
4.2.5.3 Evaluation of alternative insulation materials for use in this Standard (see Appendix C)
4.2.5.3.1 Alternative insulation materials for products shall be evaluated in accordance with the test, Dry temperature rating of new materials (long-term aging test), in UL 2556.
4.2.5.3.2 Materials having characteristics different from those specified in Table 13 shall be evaluated for the requested temperature rating in accordance with 5.15. To be evaluated, materials shall have an initial absolute minimum tensile strength of not less than 6.8 MPa (1000 lbf/in2), and an absolute minimum elongation of 100 percent before aging.
4.2.5.3.3 The temperature rating and thickness of those materials having characteristics different from those specified in Table 13 shall be as required for the specific thermoplastic-insulated wire or cable type. The electrical, mechanical, and physical characteristics of the wire or cable using these materials shall be such that the materials meet the specified requirements for the temperature rating.
4.2.5.3.4 Insulation material complying with 4.2.5.3.2 shall then be evaluated to establish requirements for its specific physical properties in Table 14.
4.4 Braids
4.4.1 Type FEPB wire in size 14 — 2 AWG shall be provided with a lacquer-coated glass braid applied over the insulation. The lacquer coating on the glass braid on size 14 — 2 AWG Type FEPB wires shall not reduce the ability of the finished wires to comply with the applicable flame test(s) in this Standard.
5 Test requirements
5.1 General
5.1.1 Every length of finished insulated conductor shall be capable of meeting the test requirements set out in 5.2 — 5.19, as applicable.
5.2 Conductor resistance
5.2.1 The direct-current resistance of the conductor shall not be
5.2.2 A twisted conductor assembly shall not exceed the value tabulated in Tables 15 —23 as applicable, for a single conductor multiplied by whichever of the following factors is applicable:
a) Cabled in one layer: 1.02;
b) Cabled in more than one layer: 1.03; or
greater than shown in Tables 15 — 23 inclusive. For conductors for which the maximum resistance is not tabulated in Tables 15 — 23, the maximum resistance for a given size of the solid or stranded construction shall be determined by multiplying the maximum resistance tabulated in the tables for uncoated copper of the same size and construction by the ratio of 100 percent IACS (International Annealed Copper Standard) to the percent conductivity as shown in the applicable conductor standard.
c) Cabled as an assembly of other pre-cabled units: 1 .04.