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ANSI/NEMA WC 53/ICEA T-27-581-2020 Standard Test Methods for Extruded Dielectric Power, Control, Instrumentation, and Portable Cables for Test, 2020
- Foreword
- Section 1 General [Go to Page]
- 1.1 Scope
- 1.2 References [Go to Page]
- 1.2.1 Normative References [Go to Page]
- ** Available from: Global Professional Publications
- National Technical Information Service
- Section 2 Electrical Methods [Go to Page]
- 2.1 Conductor DC Resistance [Go to Page]
- 2.1.1 Method When Sample Nominal Resistance is 1 Ohm or More
- 2.1.2 Method When Sample Nominal Resistance is Less Than 1 Ohm
- 2.1.3 Precautions for Short Sample Method
- 2.1.4 Converting Measured Conductor Resistance to Resistance at 25ºC
- 2.2 Voltage Tests on Completed Cables [Go to Page]
- 2.2.1 General [Go to Page]
- 2.2.1.1 Cables without Metallic Sheath, Shield, or Armor
- 2.2.1.1.1 Single Conductor Cable and Assemblies without an Overall Jacket
- 2.2.1.1.2 Multiple-conductor Cable with an Overall Jacket [Go to Page]
- 2.2.1.2 Cables with Metallic Sheath, Shield, or Armor
- 2.2.2 AC Voltage Test
- 2.2.3 DC Voltage Test
- 2.2.4 Spark Testing [Go to Page]
- 2.2.4.1 Equipment
- 2.2.4.2 Procedure
- 2.2.4.3 Failure
- 2.3 Insulation Resistance [Go to Page]
- 2.3.1 Single Conductor Cables
- 2.3.2 Multiple Conductor Cables [Go to Page]
- 2.3.2.1 Nonshielded Cables
- 2.3.2.2 Shielded Cables
- 2.3.3 Method to Determine the 1(F Coefficient Factor for an Insulation
- 2.3.4 Converting Insulation Resistance to Insulation Resistance Constant
- 2.4 Dissipation Factor (DF), Capacitance (C), and Dielectric Constant
- 2.5 Suitability of Insulation Compounds for Use on DC Circuits in Wet Locations
- 2.6 Accelerated Water Absorption Test (EM-60)
- 2.7 Dielectric Constant and Voltage Withstand for Nonconducting Stress Control Layers
- 2.8 Specific Surface Resistivity
- 2.9 U-Bend Discharge Resistance
- 2.10 Track Resistance
- 2.11 Volume Resistivity [Go to Page]
- 2.11.1 Conductor Stress Control
- 2.11.2 Insulation Shield
- 2.11.3 Four-Electrode Method
- 2.12 Semiconducting Jacket Radial Resistivity Test [Go to Page]
- 2.12.1 Sample Preparation
- 2.12.2 Test Equipment Setup [Go to Page]
- Circuit for Radial Resistivity Measurement of Semi-Conducting Jackets
- 2.12.3 Calculation
- 2.13 Dry Electrical Test for Class Iii Insulations (Shielded Medium Voltage Only) [Go to Page]
- 2.13.1 Test Samples
- 2.13.2 Test Procedure
- 2.13.3 Electrical Measurements
- 2.14 Discharge Resistance Test for Discharge Resistant Insulation [Go to Page]
- 2.14.1 Test Specimens
- 2.14.2 Test Environment
- 2.14.3 Test Electrodes
- 2.15 Wet Insulation Resistance Stability (600–2000 Volts)
- Section 3 Dimensional Methods [Go to Page]
- 3.1 Conductor Cross-Sectional Area by Diameter Measurements
- 3.2 Thickness of Components over a Conductor [Go to Page]
- 3.2.1 Optical Measuring Device Method for Any Component
- 3.2.2 Micrometer Method for Un-Bonded Components
- 3.2.3 Extruded Polymeric Components
- 3.2.4 Tape [Go to Page]
- 3.2.4.1 Polymeric Tapes
- 3.2.4.2 Metallic Tapes
- 3.2.5 Sheath
- 3.2.6 Bedding and Servings
- 3.3 Diameter over Cable Components [Go to Page]
- 3.3.1 Measurement Method for Conductors
- 3.3.2 Method for Any Component except Conductors [Go to Page]
- 3.3.2.1 Micrometer Method
- 3.3.2.2 Optical Measuring Device Method
- 3.3.3 Tape Method for Any Component Having a Diameter 0.750 in. (19.1 mm) or Greater
- 3.4 Protrusion and Convolution Measurement
- Section 4 Physical Methods [Go to Page]
- 4.1 Adhesion (Stripping Force)
- 4.2 Cold Bend
- 4.3 Heat Deformation (Distortion) [Go to Page]
- 4.3.1 Insulation or Covering Deformation [Go to Page]
- 4.3.1.1 Test Specimens
- 4.3.1.2 Test Procedure
- 4.3.1.3 Calculation of Deformation
- 4.3.2 Deformation of Jackets, Non-Conducting and Semiconducting [Go to Page]
- 4.3.2.1 Test Specimen
- 4.3.2.2 Test Procedure
- 4.3.2.3 Calculation of Deformation
- 4.4 Flexibility Test for Interlocked Armor
- 4.5 Tear Resistance
- 4.6 Gravimetric Water Absorption
- 4.7 Direction and Length Of Lay
- 4.8 Jacket Irregularity Inspection
- 4.9 Hot Creep Test
- 4.10 Flame Tests [Go to Page]
- 4.10.1 Vertical Tray Flame Test (Cable) [Go to Page]
- 4.10.1.1 70,000 BTU [Go to Page]
- 4.10.1.2 210,000 BTU
- 4.10.2 Vertical Flame Test (Single-Wire) [Go to Page]
- 4.10.2.1 Type A
- 4.10.2.1.1 Apparatus
- 4.10.2.1.2 Preparation
- 4.10.2.1.3 Procedure
- 4.10.2.2 Type B [Go to Page]
- 4.10.2.2.1 Apparatus
- 4.10.2.2.2 Preparation
- 4.10.2.2.3 Procedure
- 4.11 Physical and Aging Tests for Coverings, Insulations, Jackets, and Nonmetallic Conducting Materials [Go to Page]
- 4.11.1 Sampling [Go to Page]
- 4.11.1.1 Insulations
- 4.11.1.2 Jackets
- 4.11.1.3 Nonmetallic Semi-conducting Materials
- 4.11.2 Number of Test Specimens
- 4.11.3 Size and Preparation of Specimens
- 4.11.4 Calculation for Area of Test Specimens
- 4.11.5 Physical Test Procedures [Go to Page]
- 4.11.5.1 Test Temperature
- 4.11.5.2 Type of Testing Machine
- 4.11.6 Retests
- 4.11.7 Tensile Strength Test
- 4.11.8 Tensile Stress Test
- 4.11.9 Elongation Test
- 4.11.10 Set Test
- 4.11.11 Aging Tests [Go to Page]
- 4.11.11.1 Test Specimens
- 4.11.11.2 Air Oven Test
- 4.11.11.3 Oil Immersion Test for Polyvinyl-Chloride Jacket
- 4.11.11.4 Oil Immersion Test for Thermosetting Jacket
- 4.11.12 Physical Tests for Semiconducting Materials Intended for Extrusion [Go to Page]
- 4.11.12.1 Test Sample
- 4.11.12.2 Test Specimens
- 4.11.12.3 Elongation
- 4.11.12.4 Brittleness
- 4.12 Absorption Coefficient
- 4.13 Heat Shock
- 4.14 Environmental Cracking [Go to Page]
- 4.14.1 Test Specimens
- 4.14.2 Test Procedures
- 4.15 Method for Flexibility Test for Continuous Corrugated Armor
- 4.16 Shrinkback Test [Go to Page]
- 4.16.1 Sample Preparation
- 4.16.2 Test Procedure
- 4.17 Wafer Boil Test for Conductor and Insulation Shields
- 4.18 Extruded Insulation Shield Removability (Field Strippability) Test
- 4.19 Tightness of Polyethylene Jacket to Sheath Test [Go to Page]