ASTM B902/B902M-13e1

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Designation:B902/B902M −13
Standard Specification for
Compressed Round Stranded Copper Conductors, Hard,
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Medium-Hard, or Soft Using Single Input Wire Construction
This standard is issued under the fixed designation B902/B902M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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ε NOTE—Designation was corrected editorially in October 2013.
1. Scope B246 Specification for Tinned Hard-Drawn and Medium-
Hard-Drawn Copper Wire for Electrical Purposes
1.1 This specification covers stranded conductors made
B263 Test Method for Determination of Cross-Sectional
from round copper wires, either uncoated or coated with tin,
Area of Stranded Conductors
lead, or lead alloy for general use in insulated conductor
B354 Terminology Relating to Uninsulated Metallic Electri-
assemblies for electrical purposes. These conductors shall be
cal Conductors
composed of one or more roller shaped or die closed layers of
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2.2 Other Standard:
helically laid wires using the single input wire (SIW) method-
NBS Handbook 100: Copper Wire Tables
ology. (see Note 1 and Explanatory Note 1)
NOTE 1—Sealed conductors which are intended to prevent longitudinal
3. Classification
water propagation and are further covered/insulated, are also permitted
within the guidelines of this specification.
3.1 The conductors described in this specification are in-
tendedforsubsequentinsulationorcovering.Theclassification
1.2 The values stated in inch-pound or SI units are to be
of these conductors is SIW compressed.
regarded separately as standard. The values in each system are
not exact equivalents; therefore, each system shall be used
4. Ordering Information
independently of the other. Combining values from the two
systems may result in nonconformance with the specification.
4.1 Orders for material under this specification shall include
1.2.1 For density, resistivity, and temperature, the values
the following information:
stated in SI units are to be regarded as standard.
4.1.1 Quantity of each size,
4.1.2 Conductorsize:circular-milareaorAWG(seeSection
2. Referenced Documents
7),
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4.1.3 Class: SIW compressed (see 1.2 and Table 1),
2.1 ASTM Standards:
4.1.4 Temper (see 5.3),
B1 Specification for Hard-Drawn Copper Wire
4.1.5 Whether coated or uncoated; if coated (see 5.1 and
B2 Specification for Medium-Hard-Drawn Copper Wire
5.2).
B3 Specification for Soft or Annealed Copper Wire
4.1.6 Details of special-purpose lays, if required (see 7.3).
B33 Specification for Tin-Coated Soft or Annealed Copper
4.1.7 When physical tests shall be made (see Sections 9 and
Wire for Electrical Purposes
10).
B189 Specification for Lead-Coated and Lead-Alloy-Coated
4.1.8 Package size (see 16.1).
Soft Copper Wire for Electrical Purposes
4.1.9 Lagging, if required (see 16.2).
B193 Test Method for Resistivity of Electrical Conductor
4.1.10 Special package marking, if required (see Section
Materials
16.3), and
4.1.11 Place of inspection (see Section 15).
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This specification is under the jurisdiction of ASTM Committee B01 of
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on 5. Requirements for Wires
Conductors of Copper and Copper Alloys.
5.1 The purchaser shall designate the type of wire and the
Current edition approved Feb. 1, 2013. Published February 2013. Originally
approved in 2000. Last previous edition approved in 2010 as B902 – 04a (2010). kind of coating, if any, to be used in the conductor.
DOI: 10.1520/B0902_B0902M-13E01.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from National Technical Information Service (NTIS), 5301 Shawnee
the ASTM website. Rd., Alexandria, VA 22312, http://www.ntis.gov.
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B902/B902M−13
TABLE 1 Construction Requirements of Compressed Round SIW Standard Copper Conductors
Compressed Strand Dimensions
Conductor Size Nominal Nominal
Diameter Diameter
of SIW of SIW
Minimum Compressed Compressed
Number of Conductor, Conductor, Mass DC Resistance at 20°C
2
cmils AWG mm Wires in. mm. lb/1000ft kg/km Ω/1000ft Ω/km
5 000 000 2534 217 2.424 61.57 15890 23649 0.00218 0.00715
4 500 000 2280 217 2.300 58.41 14300 21283 0.00242 0.00794
4 000 000 2027 217 2.168 55.07 12590 18738 0.00270 0.00886
3 500 000 1773 169 2.028 51.51 11020 16401 0.00308 0.01010
3 000 000 1520 169 1.
...