ASTM B902 / B902M - 13(2018)

    Standard Specification for Compressed Round Stranded Copper Conductors, Hard, Medium-Hard, or Soft Using Single Input Wire Construction

    Active Standard ASTM B902 / B902M | Developed by Subcommittee: B01.04

    Book of Standards Volume: 02.03


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    Abstract

    This specification covers stranded conductors made from round copper wires, either uncoated or coated with tin, lead, or lead alloy for general use in insulated conductor assemblies for electrical purposes. These conductors shall be composed of one or more roller shaped or die closed layers of helically laid wires using the single input wire. For stranded conductors, the direction of lay of the outer layer shall be leeft hand and may be reversed or unidirectional/unilay in successive layers. Test for the physical and electrical properties of wires composing conductors made from hard-drawn or medium-hard-drawn wires, uncoated or coated, shall be made before but not after stranding. For the purpose of calculating mass, cross sections, and so forth, the density of the copper shall be taken. The mass and electrical resistance of a unit length of stranded unsealed conductor are a function of the lenght of lay shall be calculated.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers stranded conductors made from round copper wires, either uncoated or coated with tin, lead, or lead alloy for general use in insulated conductor assemblies for electrical purposes. These conductors shall be composed of one or more roller shaped or die closed layers of helically laid wires using the single input wire (SIW) methodology. (see Note 1 and Explanatory Note 1)

    Note 1: Sealed conductors which are intended to prevent longitudinal water propagation and are further covered/insulated, are also permitted within the guidelines of this specification.

    1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

    1.2.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.

    1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B1 Specification for Hard-Drawn Copper Wire

    B2 Specification for Medium-Hard-Drawn Copper Wire

    B3 Specification for Soft or Annealed Copper Wire

    B33 Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes

    B189 Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes

    B193 Test Method for Resistivity of Electrical Conductor Materials

    B246 Specification for Tinned Hard-Drawn and Medium-Hard-Drawn Copper Wire for Electrical Purposes

    B263 Test Method for Determination of Cross-Sectional Area of Stranded Conductors

    B354 Terminology Relating to Uninsulated Metallic Electrical Conductors

    Other Standard

    NBS Handbook 100 Copper Wire Tables


    ICS Code

    ICS Number Code 29.060.10 (Wires)

    UNSPSC Code

    UNSPSC Code 26121517(Copper wire)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0902_B0902M-13R18

    Citation Format

    ASTM B902 / B902M-13(2018), Standard Specification for Compressed Round Stranded Copper Conductors, Hard, Medium-Hard, or Soft Using Single Input Wire Construction, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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