UL 1581
Reference Standard for Electrical Wires, Cables, and Flexible Cords

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2001-10-31DOD Approved: --
Price Code:AANSI Approved: 2017-12-08
Type:ulstd

  • SCOPE

    1 Scope

    1.1 This standard contains specific details of the conductors, of the insulation, of the jackets and other coverings, and of the methods of sample preparation, of specimen selection and conditioning, and of measurement and calculation that are required in wire and cable standards.

    1.2 The requirements for the particular materials, construction, performance, and marking of an individual type of wire, cable, or flexible cord are stated in the standard covering the finished type. They are not part of this reference standard.

    1.3 In each case in which an element of this standard does not apply, the standard covering the finished type so states and specifies what does apply.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
    • UL Foreword
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 References and Terms
          • 4 – 9 Reserved for Future Use
        • CONDUCTORS
          • 10 Requirements for Aluminum Conductors of an 8000 Series Alloy
          • 11 Requirements for Copper-Clad Aluminum Conductors
          • 12 – 19 Reserved for Future Use
          • 20 Conductor Diameter and Cross-Sectional Area
          • 21 – 29 Reserved for Future Use
          • 30 D-C Conductor Resistance
          • 31 – 39 Reserved for Future Use
        • INSULATION AND JACKET MATERIALS
          • 40 General
          • 41 – 46 Reserved for Future Use
          • 47 Index Table
          • 48 – 49 Reserved for Future Use
          • 50 Specific Materials
          • 51 – 199 Reserved for Future Use
        • METHODS
        • CONDUCTOR DIMENSIONS AND RESISTANCE
          • 200 Conductor Diameter
          • 201 – 209 Reserved for Future Use
          • 210 Conductor Cross-Sectional Area by the Weight Method
          • 211 – 219 Reserved for Future Use
          • 220 D-C Conductor Resistance
          • 221 – 227 Reserved for Future Use
        • WIRE BRAID AND SERVING COVERAGE
          • 228 Measurements and Calculations
          • 229 – 239 Reserved for Future Use
        • THICKNESSES OF INSULATION AND JACKET
          • 240 Thicknesses of Insulation on Thermoplastic- and Thermoset-Insulated Wires and Cable
          • 241 – 249 Reserved for Future Use
          • 250 Thicknesses of Insulation on Flexible Cord and on Fixture Wire
          • 251 – 259 Reserved for Future Use
          • 260 Thicknesses of Jacket on Thermoplastic- and Thermoset-Insulated Wires and Cables
          • 261 – 279 Reserved for Future Use
          • 280 Thicknesses of Jacket on Flexible Cord, Fixture Wire, and Elevator Cable
          • 281 – 399 Reserved for Future Use
        • PHYSICAL PROPERTIES TESTS OF INSULATION AND JACKET
          • 400 General
          • 401 – 419 Reserved for Future Use
          • 420 Apparatus
          • 421 – 439 Reserved for Future Use
          • 440 Preparation of Specimens
          • 441 – 459 Reserved for Future Use
          • 460 Recovery
          • 461 – 469 Reserved for Future Use
          • 470 Ultimate Elongation and Tensile Strength
          • 471 – 479 Reserved for Future Use
          • 480 Accelerated Aging
          • 481 Long-Term Aging
          • 482 – 489 Reserved for Future Use
        • COMPOUND ANALYSIS
          • Polyvinyl Chloride (PVC) Compounds
          • 490 Infrared Spectroscopy
          • 491 Determination of the Ash Content
          • 492 Elemental Analysis
          • 493 Gel Permeation Chromatography
          • Other compounds
          • 494 Infrared Spectroscopy
          • 495 Pyrolytic Gas Chromatography
          • 496 Thermogravimetry
          • 497 Differential Scanning Calorimetry
          • 498 and 499 Reserved for Future Use
        • CONDUCTOR CORROSION
          • 500 General
          • 501 – 519 Reserved for Future Use
        • INSULATION FALL-IN
          • 520 Test
          • 521 – 539 Reserved for Future Use
        • HEAT SHOCK
          • 540 Test
          • 541 – 559 Reserved for Future Use
        • DEFORMATION
          • 560 Test
          • 561 – 579 Reserved for Future Use
        • COLD BEND
          • 580 Test
          • 581 and 582 Reserved for Future Use
        • FLEXIBILITY AT LOW TEMPERATURE
          • 583 Test
          • 584 – 592 Reserved for Future Use
        • IMPACT AT ABNORMALLY LOW TEMPERATURE
          • 593 Test
          • 594 Reserved for Future Use
        • CRUSHING RESISTANCE
          • 595 Test
          • 596 – 600 Reserved for Future Use
          • 601 Crushing-Resistance Test of Round Type NM Cable
          • 602 – 619 Reserved for Future Use
          • 620 Crushing-Resistance Test of Types XHHW-2, XHHW, and XHH
          • 621 – 699 Reserved for Future Use
        • DIELECTRIC TESTS
          • 700 Dielectric Breakdown Test of Types XHHW-2, XHHW, and XHH after Glancing Impact
          • 701 – 719 Reserved for Future Use
          • 720 Dielectric Breakdown Test of Types XHHW-2, XHHW, and XHH after Scoring
          • 721 – 759 Reserved for Future Use
          • 760 Dielectric Voltage-Withstand Test of Straight Foil-Wrapped Specimens
          • 761 – 779 Reserved for Future Use
          • 780 Dielectric Voltage-Withstand Test of Foil-Wrapped U-Bend Specimens
          • 781 – 799 Reserved for Future Use
          • 800 Dielectric Voltage-Withstand Test for Cord Conductors
          • 801 – 819 Reserved for Future Use
          • 820 Dielectric Voltage-Withstand Test of Coils and Reels in Water
          • 821 – 829 Reserved for Future Use
          • 830 Dielectric Voltage-Withstand Tests for Power-Limited Circuit Cable and for Cable for Power-Limited Fire-Alarm Circuits
          • 831 – 899 Reserved for Future Use
        • SPARK TEST
          • 900 Method
          • 901 – 909 Reserved for Future Use
          • 910 Spark Tests for Power-Limited Circuit Cable and for Cable for Power-Limited Fire-Alarm Circuits
          • 911 – 918 Reserved for Future Use
        • INSULATION RESISTANCE
          • 919 Test Procedure for Determining the Multiplying-Factor Column for Adjusting Insulation Resistance
          • 920 Insulation-Resistance Test in Water
          • 921 – 999 Reserved for Future Use
        • STABILITY FACTOR
          • 1000 Test
          • 1001 – 1019 Reserved for Future Use
        • CAPACITANCE AND RELATIVE PERMITTIVITY
          • 1020 Test
          • 1021 – 1039 Reserved for Future Use
        • MECHANICAL WATER ABSORPTION
          • 1040 Test
          • 1041 and 1042 Reserved for Future Use
        • SWELLING AND BLISTERING IN WATER
          • 1043 Test
          • 1044 – 1059 Reserved for Future Use
        • FLAME TESTS
          • 1060 Vertical Flame and FT1 Tests
          • 1061 Cable Flame Test
          • 1062 – 1079 Reserved for Future Use
          • 1080 VW-1 (Vertical-Specimen) Flame Test
          • 1081 – 1089 Reserved for Future Use
          • 1090 Horizontal-Specimen Appliance-Wire Flame Test
          • 1091 – 1099 Reserved for Future Use
          • 1100 Horizontal-Specimen / FT2 Flame Test
          • 1101 – 1159 Reserved for Future Use
          • 1160 UL Vertical-Tray Flame Test
          • 1161 – 1163 Reserved for Future Use
          • 1164 FT4/IEEE 1202 Vertical-Tray Flame Test
          • 1165 – 1199 Reserved for Future Use
        • SUNLIGHT RESISTANCE
          • 1200 Xenon-Arc Tests
          • 1201 – 1249 Reserved for Future Use
        • GLASS CONTENT
          • 1250 Test
          • 1251 – 1269 Reserved for Future Use
        • TIGHTNESS OF INSULATION
          • 1270 Test for Tightness of Conductor Insulation in Decorative-Lighting Cords and Wire
          • 1271 – 1279 Reserved for Future Use
          • 1280 Test for Tightness of Circuit-Conductor Insulation in Integral Parallel Cord Other Than Tinsel Cord
          • 1281 – 1299 Reserved for Future Use
        • LEAKAGE
          • 1300 Test of Type TBS for Surface Leakage Resistance
          • 1301 – 1319 Reserved for Future Use
          • 1320 A-C Leakage-Current Tests of Low-Leakage-Current Service Cords
          • 1321 – 1339 Reserved for Future Use
          • 1340 Test for D-C Resistance of Nonintegral Cord Jacket
          • 1341 – 1399 Reserved for Future Use
        • IMPACT RESISTANCE
          • 1400 Test
          • 1401 – 1499 Reserved for Future Use
        • ABRASION OF 22 AWG TYPE XTW AND CXTW WIRE AND CORD
          • 1500 Test
          • 1501 – 1509 Reserved for Future Use
        • ABRASION
          • 1510 Test
          • 1511 – 1519 Reserved for Future Use
        • FLEXING OF 22 AWG TYPE XTW AND CXTW WIRE AND CORD
          • 1520 Test
          • 1521 – 1539 Reserved for Future Use
        • CRACKING OF NYLON COVERING ON COAXIAL-CABLE MEMBERS OF ELEVATOR CABLES OR OF NYLON JACKET ON TYPES TFN, TFFN, AND SPT-1 AND OF INSULATED CONDUCTORS IN SERVICE CORDS
          • 1540 Test
          • 1541 – 1559 Reserved for Future Use
        • FLEXING OF TYPE SF-1, SF-2, SFF-1, AND SFF-2 FIXTURE WIRES
          • 1560 Test
          • 1561 – 1581 Reserved for Future Use
        • FLEXING OF SHIELDED CORDS
          • 1582 Test
          • 1583 – 1589 Reserved for Future Use
        • MANDREL TEST OF NYLON JACKET ON TYPE THWN-2, THWN, AND THHN WIRES
          • 1590 Test
          • 1591 – 1599 Reserved for Future Use
          • 1600 Comparison of Metal Sheaths
          • 1601 – 1609 Reserved for Future Use
        • MOISTURE ABSORPTION BY FIBROUS COVERINGS OTHER THAN TAPE
          • 1610 Test
          • 1611 – 1629 Reserved for Future Use
        • FALLING PARTICLES AND DRIPPING FROM FIBROUS-COVERED WIRE AND CABLE
          • 1630 Test
          • 1631 – 1669 Reserved for Future Use
        • ARCING OF TYPE HPN CORD
          • 1670 Flame Test
          • 1671 – 1679 Reserved for Future Use
          • 1680 Broken-Strands Test
          • 1681 – 1689 Reserved for Future Use
        • DURABILITY OF INDELIBLE-INK PRINTING
          • 1690 Test