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ASTM B902-13

Current Revision

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

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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 1Sealed 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.


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.


SDO ASTM: ASTM International
Document Number B902
Publication Date Feb. 1, 2013
Language en - English
Page Count 5
Revision Level 13
Supercedes
Committee B01.04
Publish Date Document Id Type View
Feb. 1, 2013 B0902-13 Revision
Sept. 1, 2004 B0902-04A Revision
April 1, 2004 B0902-04 Revision
April 10, 2000 B0902-00 Revision
Oct. 1, 2010 B0902-04AR10 Reaffirmation