ASTM B173-10

Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors

ABSTRACT
This specification covers bare rope-lay-stranded conductors having concentric-stranded members made from round copper wires, either uncoated or coated with tin, lead, or lead-alloy for use as electrical conductors. Coated wires shall include only those wires with finished diameters and densities substantially equal to the respective diameters and densities of uncoated wires. The rope-lay-stranded copper conductors under this specification are classified either as Class G or Class H. Requirements for joint construction (by soldering, brazing, or welding), lay length, and strand construction are detailed. Tests for the electrical properties of wires composing conductors made from soft or annealed copper wire, bare or coated, shall be made before stranding, while tests for the physical properties (such as elongation) may be made upon the wires before stranding or upon wires removed from the completed stranded conductors, but need not be made upon both. Elongation tests to determine compliance shall not be made on the conductor as a unit. If a tinning, lead-coating, or lead-alloy-coating test is required, it shall be made on the wires prior to stranding. The method of calculating mass, cross-sections and electrical resistance, and the prescribed density of copper to be taken for calculations are given.
SCOPE
1.1 This specification covers bare rope-lay-stranded conductors having concentric-stranded members made from round copper wires, either uncoated or coated with tin, lead, or lead-alloy for use as electrical conductors (Explanatory Note 1 and Note 2).
1.2 Coated wires shall include only those wires with finished diameters and densities substantially equal to the respective diameters and densities of uncoated wires.
1.3 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. For conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding values, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units.
1.3.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.

General Information

• Status: Historical
• Publication Date: 31-Mar-2010
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.04 - Conductors of Copper and Copper Alloys

Relations

• Replaces: ASTM B173-01a(2007)e1 - Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors
• Effective Date: 01-Apr-2010
• Replaced By: ASTM B173-10(2015) - Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors
• Effective Date: 01-Apr-2015
• Referred By: ASTM B8-11(2017) - Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
• Effective Date: 01-Apr-2010
• Referred By: ASTM F855-23 - Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment
• Effective Date: 01-Apr-2010
• Referred By: ASTM B226-11(2021) - Standard Specification for Cored, Annular, Concentric-Lay-Stranded Copper Conductors
• Effective Date: 01-Apr-2010
• Referred By: ASTM F2321-23 - Standard Specification for Flexible and Rigid Insulated Temporary By-Pass Jumpers
• Effective Date: 01-Apr-2010
• Referred By: ASTM F2249-23 - Standard Specification for In-Service Test Methods for Temporary Grounding Jumper Assemblies Used on De-Energized Electric Power Lines and Equipment
• Effective Date: 01-Apr-2010
• Referred By: ASTM B172-17 - Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical Conductors
• Effective Date: 01-Apr-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B173 −10
StandardSpecification for
Rope-Lay-Stranded Copper Conductors Having Concentric-
1
Stranded Members, for Electrical Conductors
This standard is issued under the fixed designation B173; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope Wire for Electrical Purposes
B172 Specification for Rope-Lay-Stranded Copper Conduc-
1.1 This specification covers bare rope-lay-stranded con-
torsHavingBunch-StrandedMembers,forElectricalCon-
ductors having concentric-stranded members made from round
ductors
copper wires, either uncoated or coated with tin, lead, or
B189 Specification for Lead-Coated and Lead-Alloy-Coated
lead-alloy for use as electrical conductors (Explanatory Note 1
Soft Copper Wire for Electrical Purposes
and Note 2).
B193 Test Method for Resistivity of Electrical Conductor
1.2 Coated wires shall include only those wires with fin-
Materials
ished diameters and densities substantially equal to the respec-
B263 Test Method for Determination of Cross-Sectional
tive diameters and densities of uncoated wires.
Area of Stranded Conductors
1.3 The values stated in inch-pound or SI units are to be B354 Terminology Relating to Uninsulated Metallic Electri-
cal Conductors
regarded separately as standard. Each system shall be used
independently of the other. Combining values from the two 2.3 American National Standard:
3
systems may result in nonconformance with the specification. ANSI C42.35 Definitions of Electrical Terms
For conductor sizes designated byAWG or kcmil, the require-
3. Classification
ments in SI units have been numerically converted from
corresponding values, stated or derived, in inch-pound units.
3.1 For the purpose of this specification rope-lay-stranded
For conductor sizes designated by SI units only, the require-
conductors having concentric-stranded members are classified
ments are stated or derived in SI units.
as follows:
1.3.1 For density, resistivity, and temperature, the values
3.1.1 Class G—Conductors consisting of 7 to 61 rope-lay-
stated in SI units are to be regarded as standard.
stranded members, each of which consists of 7 to 19
concentric-stranded wires, with total conductor sizes ranging
2 2
2. Referenced Documents
from No. 14AWG (2.08 mm ) to 5 000 000 cmil (2534 mm ).
(Typical use is for rubber-sheathed conductor, apparatus
2.1 The following documents of the issue in effect at the
conductor, portable conductor, and similar applications.)
time of reference form a part of this specification to the extent
3.1.2 Class H—Conductors consisting of 19 to 91 rope-lay-
referenced herein:
stranded members, each of which consists of 7 to 19
2
2.2 ASTM Standards:
concentric-stranded wires, with total conductor sizes ranging
B3 Specification for Soft or Annealed Copper Wire
2 2
from No. 9 AWG (6.63 mm ) to 5 000 000 cmil (2534 mm ).
B8 Specification for Concentric-Lay-Stranded Copper
Class K construction produces a conductor with greater flex-
Conductors, Hard, Medium-Hard, or Soft
ibility than class G. (Typical use is for rubber-sheathed cord
B33 Specification for Tin-Coated Soft or Annealed Copper
and applications where flexibility is required such as on
take-up reels over sheaves and extra-flexible apparatus con-
ductor.)
1
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
4. Ordering Information
Conductors of Copper and Copper Alloys.
Current edition approved April 1, 2010. Published May 2010. Originally
4.1 Orders for material under this specification shall include
approvedin1942toreplaceportionsofB158 – 41 T.Lastpreviouseditionapproved
ε1
the following information:
in 2007 as B173 – 01a (2007) . DOI: 10.1520/B0173-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B173−10
4.1.1 Quantity of each size and class; 8.2 Tests for the physical properties of soft or annealed
4.1.2 Conductor size: circular-mil area orAWG (Section 7); copper wire, bare or coated, may be made upon the wires
4.1.3 Class (Sec
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:B173–01a (Reapproved 2007) Designation: B173 – 10
Standard Specification for
Rope-Lay-Stranded Copper Conductors Having Concentric-
1
Stranded Members, for Electrical Conductors
This standard is issued under the fixed designation B173; 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.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—Table1 was editorially corrected in March 2007.
1. Scope
1.1 This specification covers bare rope-lay-stranded conductors having concentric-stranded members made from round copper
wires, either uncoated or coated with tin, lead, or lead-alloy for use as electrical conductors (Explanatory Note 1 and Note 2).
1.2 Coated wires shall include only those wires with finished diameters and densities substantially equal to the respective
diameters and densities of uncoated wires.
1.3 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used
independently of the other. Combining values from the two systems may result in nonconformance with the specification. For
conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding
values, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or
derived in SI units.
1.3.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.
2. Referenced Documents
2.1 The following documents of the issue in effect at the time of reference form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B3 Specification for Soft or Annealed Copper Wire
B8 Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
B33 Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes
B172 Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical Conductors
B189 Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes
B193 Test Method for Resistivity of Electrical Conductor Materials
B263 Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
2.3 American National Standard:
3
ANSI C42.35 Definitions of Electrical Terms
3. Classification
3.1 For the purpose of this specification rope-lay-stranded conductors having concentric-stranded members are classified as
follows:
3.1.1 Class G—Conductors consisting of 7 to 61 rope-lay-stranded members, each of which consists of 7 to 19 concentric-
2 2
stranded wires, with total conductor sizes ranging from No. 14AWG (2.08 mm ) to 5 000 000 cmil (2534 mm ). (Typical use is
for rubber-sheathed conductor, apparatus conductor, portable conductor, and similar applications.)
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on Conductors
of Copper and Copper Alloys.
Current edition approved March 15, 2007. Published April 2007. Originally approved in 1942 to replace portions of B158–41T. Last previous edition approved in 2001
as B173–01a. DOI: 10.1520/B0173-01AR07E01.
Current edition approvedApril 1, 2010. Published May 2010. Originally approved in 1942 to replace portions of B158 – 41 T. Last previous edition approved in 2007 as
´1
B173 – 01a (2007) . DOI: 10.1520/B0173-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B173 – 10
3.1.2 Class H—Conductors consisting of 19 to 91 rope-lay-stranded members, each of which consists of 7 to 19
2 2
concentric-stranded wires, with total conductor sizes ranging from No. 9AWG (6.63 mm ) to 5 000 000 cmil (2534 mm ). Class
K co
...