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This specification covers concentric-lay-stranded conductors made from uncoated hard-drawn round copper wires in combination with hard-drawn round copper-clad steel wires for general use as overhead electrical conductors. The conductors are classified under the following type designations: Type A, Type C, Type D, Type E, Type EK, Type F, Type G, Type J, Type K, Type N, Type P, and Type V. Welds and brazes may be made in copper rods or in copper wires prior to final drawing. Joints may not be made in the finished copper wires composing concentric-lay-stranded composite conductors containing a total of seven wires or less. In other conductors, welds and brazes may be made in the finished individual copper wires composing the conductor. Also, the joints or splices may be made in the finished individual copper-clad steel wires composing concentric-lay-stranded conductors, provided that such joints or splices have a protection equivalent to that of the wire itself and that they do not decrease the strength of the finished stranded conductor below the minimum breaking strength. The density, mass, and resistance of the wires shall be determined.
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.
1.1 This specification covers concentric-lay-stranded conductors made from uncoated hard-drawn round copper wires in combination with hard-drawn round copper-clad steel wires for general use as overhead electrical conductors.
1.2 For the purpose of this specification, conductors are classified under the following type designations (see Fig. 1):
|Type A||Type G|
|Type C||Type J|
|Type D||Type K|
|Type E||Type N|
|Type EK||Type P|
|Type F||Type V|
1.3 The SI values for density are regarded as the standard. For all other properties the inch-pound values are to be regarded as standard and the SI units may be approximate.
FIG. 1 Standard Types of Composite Conductors
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B1 Specification for Hard-Drawn Copper Wire
B227 Specification for Hard-Drawn Copper-Clad Steel Wire
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ANSI StandardC 42 Definitions of Electrical Terms Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
National Institute of Standards and TechnologyNBS Handbook 100--Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460.
ICS Number Code 29.060.20 (Cables)
ASTM B229-12, Standard Specification for Concentric-Lay-Stranded Copper and Copper-Clad Steel Composite Conductors , ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top