NEMA WC 55 : 1992(R1999)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INSTRUMENTATION CABLES AND THERMOCOUPLE WIRE
07-23-2013
01-12-2013
Foreword
PART 1 - GENERAL
Scope
General Information
Information to be Supplied by Purchaser
PART 2 - CONDUCTORS
General
Wire, Physical and Electrical Properties
Copper Conductors
Wires
Solid Conductors
Stranded Conductors
Conductor dc Resistance per Unit Length
Conductor Diameter
Conductors for Thermocouple Extension Wires
Conductor Material
Size and Diameters
Direct Current (dc) Resistance of Conductors
Temperature Limits of Conductors
Limits of Error of Conductors
PART 3 - INSULATION
Materials
Thickness
SR
PE
PVC
Requirements
XLPE
EP
SR
CSPE
PVC
PE
Composites
TPE
Repairs
Voltage Tests
Insulation Resistance
Exceptions
Type A Flame Test
Type B Flame Test
PART 4 - SHIELDING AND COVERINGS
Shielding-General
Shield Continuity
Shield Isolation
Metal Tape Shields
Metal Braid Shields
Metal Wire Shields
Jackets
Thickness
Requirements
Binder
Metallic and Associated Coverings
Types of Metallic Coverings
Core Covering for Nonsheathed and Nonjacketed Cable
with Metallic Armor
Thermoplastic or Crosslinked Coverings Over
Metallic Armor
Spark Test on Each Length of Cable
PART 5 - ASSEMBLY, FILLERS, AND CONDUCTOR IDENTIFICATION
Assembly of Multiple Conductor Cables
Round Cables
Flat Twin Cables
Fillers
Conductor Identification
PART 6 - TEST METHODS
Testing - General
Conductor Test Methods
Thickness Measurements for Insulations and Nonmetallic
Jackets
Physical and Aging Tests for Insulations and Jackets
Size and Preparation of Specimens
Calculation of Area of Test Specimens
Physical Test Procedures
Tensile Strength Test
Tensile Stress Test
Elongation Test
Set Test
Aging Tests
Test Specimens
Air Oven Test
Oil Immersion Test
Hot Creep
Heat Distortion for Insulated Conductors
Heat Distortion for Thermoplastic Jackets
Heat Shock for Thermoplastic Jackets
Nylon Wrap Test
Ozone Resistance Test
Thickness of Coverings
Environmental Cracking
Absorption Coefficient
Accelerated Water Absorption
General
Electrical Method (EM-60)
Gravimetric Method
Cold Bend
Flame Testing
Type A
Type B
Voltage Tests
Alternating Current Voltage Test
Direct Current Voltage Test
Alternating Current Spark Test
Insulation Resistance
Determination of Temperature Conversion Factors for
Insulation Resistance
Specific Surface Resistivity
Dielectric Strength Retention
Shield Isolation
Insulation Resistance Method
Dielectric Method
Shield Continuity
PART 7 - SPECIAL CONSTRUCTIONS
(Reserved for future use)
PART 8 - APPENDICES
A. Industry Standard References
B. Additional Conductor Information
C. Representative Values of Tensile Strength and
Elongation for Non-Magnetic Armor Materials
D. Other Test Methods
E. Conductor and Circuit Identification
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