C22.2 No. 38-10

Thermoset-insulated wires and cables

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CSA Standards Update Service

C22.2 No. 38-10

September 2010

Title: Thermoset-insulated wires and cables

Pagination: 114 pages, each dated September 2010

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  Association of Standardization and Certification NMX-J-451-ANCE

  Fourth Edition

  
  

  Canadian Standards Association CSA C22.2 No. 38-10

  Ninth Edition

  
  

  Underwriters Laboratories Inc. UL 44

  Seventeenth Edition

  
  

  Thermoset-Insulated Wires and Cables

  
  

  September 10, 2010

  
  

  
  

  ANSI/UL 44-2010

  Commitment for Amendments

  
  

  This standard is issued jointly by the Association of Standardization and Certification (ANCE), the Canadian Standards Association (CSA), and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to ANCE, CSA, or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of ANCE, CSA, and UL. CSA and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ANCE will incorporate the same revisions into a new edition of the standard bearing the same date of issue as the CSA and UL pages.

  
  

  
  

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  ISBN 978–1–55436–734–4 © 2010 Canadian Standards Association

  
  

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  CONTENTS

  Preface 6

  1. Scope 8

  2. Definitions 8

  3. General 9

     1. Units of measure 9

     2. Reference publications 9

  4. Construction 12

     1. Conductors 12

     2. Insulation 17

     3. Jackets or fibrous coverings over single conductors 18

     4. Shielding (optional) 19

     5. Multiple-conductor cables 19

     6. Color coding 20

     7. Fillers and protective materials 21

     8. Jacket separators 21

     9. Jackets 21

     10. Evaluation of new materials – establishment of dry temperature rating of alternative insulation and jacketing materials for use in this standard 22

     11. Assemblies that include single-conductor thermoset-insulated wires 22

  5. Test requirements 23

     1. General 23

     2. Conductor resistance 23

     3. Tests of aluminum conductors 23

     4. Long-term insulation resistance in water 24

     5. Long-term insulation resistance in air for 90°C rated conductors 25

     6. Capacitance and relative permittivity 25

     7. Conductor corrosion 26

     8. Insulation fall-in 26

     9. Heat shock of thermoplastic jacket 26

     10. Flexibility of separator under a thermoplastic jacket 26

     11. Cold bend and cold impact 26

     12. Deformation 27

     13. Hot-creep elongation and hot-creep set 27

     14. Flame and smoke 27

     15. Weather (sunlight) resistance (optional) 31

     16. Oil resistance (optional) 31

     17. Gasoline and oil resistance (optional) 32

     18. Crushing resistance 32

     19. Dielectric breakdown after glancing impact 32

     20. Durability of ink printing 33

     21. Shrinkback 33

     22. Evaluation of new materials – establishment of temperature rating 33

     23. A-C spark test 33

     24. Dielectric voltage-withstand in water 34

     25. Insulation resistance in water at 15°C 34

     26. Electrical continuity 34

  6. Marking 34

     1. Marking on product 34

     2. Marking on package 37

  7. Deep-well submersible water-pump cable 38

     1. General 38

     2. Construction 38

     3. Markings 40

     4. Tests 42

Tables 43

Annex A (informative) – Conductor types covered by this Standard (See Clause 1.1)

Annex B (informative) – Summary of requirements (See Clause 1.1)

Annex C (normative) – Chemical composition of aluminum conductors (See Clause 4.1.2)

Annex D (normative) – Copper-clad aluminum conductors (See Clause 4.1.3)

1. General 84

2. Sizes and stranding 84

3. Conductor resistance 84

4. Physical properties 84

5. Marking requirements 84

Annex E (informative) – Metric sizes (See Clause 4.1.5.1)

Annex F (normative) – Protective coverings other than jackets (See Clauses 4.3.1 and 4.9.1.1)

1. General 88

2. Tapes 88

3. Cotton braids 88

   1. General 88

   2. Coverage 89

4. All-glass and glass/cotton braids 92

   F.4.5 Glass content 92

5. Cotton wraps and servings 93

   F.5.2 Coverage 93

6. Glass wraps 95

7. Braids and wraps 95

8. Saturation of fibrous coverings other than tapes 95

9. Finish 96

Annex G (normative for Canada) – Color identification of circuit conductors (See Clauses 4.6.2.2 and 7.2.5.1)

Annex H (normative) – Formulas for calculating insulation resistance of types having parameters other than as specified in this Standard (See Clause 5.4.1.2)

Annex I (normative) – Alternative national markings (See Clauses 6.1.1.3 and 7.3.1.3)

Annex J (normative) – Requirements for Types RW75, R90, and RW90 rated 5000 V (See Table 1 and Annex B)

1. General 106

2. Construction 106

   1. Conductors 106

   2. Conductor shielding 106

   3. Insulation 106

   4. Jackets 106

3. Tests 106

   1. Long-term insulation resistance in water 106

   2. Insulation resistance in air for Type R90, rated 5000 V 107

   3. Dielectric voltage-withstand in water 107

   4. Insulation Resistance in Water at 15°C 107

   5. Resistivity of extruded semiconducting shielding 107

Preface

This is the harmonized ANCE, CSA, and UL standard for Thermoset-Insulated Wires and Cables. It is the Fourth edition of NMX-J-451-ANCE, the Ninth edition of CSA C22.2 No. 38, and the Seventeenth edition of UL 44. This edition of NMX-J-451-ANCE cancels the previous edition published in 2005. This edition of CSA C22.2 No. 38 supersedes the previous edition published in 1995. This edition of UL 44 supersedes the previous edition published in 2005.

This harmonized standard was prepared by the Association of Standardization and Certification (ANCE), the Canadian Standards Association (CSA), and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee for Electrical Wires and Cables, of the Council on the Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged.

This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

The present Mexican Standard was developed by the CT 20 Conductores from the Comite de Normalizacion de la Asociacion de Normalizacion y Certificacion, A.C., CONANCE, with the collaboration of the SC 20B Conductores para Baja Tensión.

This standard was reviewed by the CSA Subcommittee on C22.2 No. 38, under the jurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee.

This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard.

Where reference is made to a specific number of specimens to be tested, the specified number is to be considered a minimum quantity.

Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose.

Level of harmonization

This standard uses the IEC format but is not based on, nor is considered equivalent to, an IEC standard. This standard is published as an equivalent standard for ANCE, CSA, and UL.

An equivalent standard is a standard that is substantially the same in technical content, except as follows: Technical national differences are allowed for codes and governmental regulations as well as those recognized as being in accordance with NAFTA Article 905, for example, because of fundamental climatic, geographical, technological, or infrastructural factors, scientific justification, or the level of protection that the country considers appropriate. Presentation is word for word except for editorial changes.

Reasons for differences from IEC

This standard provides requirements for insulated wires and cables for use in accordance with the electrical installation codes of Canada, Mexico, and the United States. At present there is no IEC standard for wires and cables for use in accordance with these codes. Therefore, this standard does not employ any IEC standard for base requirements.

Interpretations

The interpretation by the standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identified, a revision is to be proposed as soon as possible to each of the standards development organizations to more accurately reflect the intent.

ANCE effective date

The effective date for ANCE will be announced through the Diario Oficial de la Federación (Official Gazette) and is indicated on the cover page.

CSA effective date

The effective date for CSA International will be announced through CSA Informs or a CSA certification notice.

UL effective date

As of September 10, 2010 all products Listed or Recognized by UL must comply with the requirements in this standard except for clauses, figures, and tables in the following list, which are effective September 10, 2011:

Clauses 6.2 and 7.3.1.1 and Table 31.

Between September 10, 2010 and September 10, 2011, new product submittals to UL may be evaluated under all requirements in this standard or, if requested in writing, evaluated under presently effective requirements only. The presently effective requirements are contained in the Sixteenth edition of UL 44.

A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard.

Thermoset-Insulated Wires and Cables

1. Scope

   
   

   1. This Standard specifies the requirements for single-conductor and multiple-conductor thermoset-insulated wires and cables rated 600 V, 1000 V, 2000 V, and 5000 V, for use in accordance with the rules of the Canadian Electrical Code (CEC), Part 1, CSA C22.1, in Canada, Standard for Electrical Installations, NOM-001-SEDE, in Mexico, and the National Electrical Code (NEC), NFPA-70, in the United States of America.

      
      

      See Annex A for the complete list of types covered by this Standard and the specific electrical codes for which they are intended, and Annex B for a summary of construction and test requirements for these types.

      
      

   2. Table 1 provides a summary of the maximum conductor temperature, voltage ratings, and the number of insulated conductors for the types to which this Standard applies.

      
      

   3. This Standard also specifies the requirements for submersible pump cables, with or without jackets, in Clause 7. No type-letter designations are assigned to these cables.

      
      

   4. Products within this Standard may have applications not covered by the electrical codes listed in Clause 1.1.

      
      

2. Definitions

   
   

   1. The following definitions apply in this Standard:

Composite insulation system – a multiple-layer system of materials that fulfills the requirements for both electrical and mechanical integrity of the cable or wire.

CP – a thermoset compound whose characteristic constituent is chlorosulfonated polyethylene.

CPE – a thermoset compound whose characteristic constituent is chlorinated polyethylene.

EPCV – a thermoset compound whose characteristic constituent is a co-vulcanizate of ethylene and propylene with polyethylene.

EP – a thermoset compound whose characteristic constituent is a copolymer of ethylene and propylene, or a terpolymer of ethylene, propylene, and a small amount of nonconjugated diene, or a blend of both.

Equipment-grounding conductor – a conductor that is defined in the National Electrical Code and the Standard for Electrical Installations as Grounding Conductor, Equipment, and defined in the Canadian Electrical Code, Part I, as Bonding conductor.

NBR/PVC – a thermoset compound whose characteristic constituents are acrylonitrile butadiene rubber and polyvinyl chloride.

Neoprene – a thermoset compound whose characteristic constituent is polychloroprene.

SBR/IIR/NR – designates a thermoset compound whose characteristic constituent is SBR (styrene and butadiene copolymer), IIR (butyl rubber), blends of SBR and IIR, or blends of SBR and/or IIR with NR (natural rubber).