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ASTM B1006-17

(Specification)

Standard Specification for Electrical Overhead Conductor Code Word Names

Standard Specification for Electrical Overhead Conductor Code Word Names

ABSTRACT
This specification lists code word names for bare overhead electrical conductors that are recognized in North America. Code word names are used to describe various conductor constructions used in North America, Europe and elsewhere in the world. The code word name construction can be modified with the use of suffix modifiers that identify additional construction variations. For example, the type of steel core material used in an ACSR (aluminum conductors, steel reinforced) type of conductor may be modified with the letter designation ”/GA3” denoting the strength and type of coating for the steel core material. The code word names are grouped into tables of like constructions. The tables provide the applicable ASTM standard for which the conductor construction may be built to. They include code word names that are referenced in Canadian Standards Association (CSA) and European Committee for Electrotechnical Standardization (CENELEC) standards.
This specification covers various overhead conductor constructions and code word names; compact round ACSR aluminum stranded conductors; trapezoidal shaped—ACSR and ACSS (aluminum conductors, coated steel supported) stranded conductors; concentric-lay-stranded self-damping ACSR, concentric round—6201 (T81) AAAC (all aluminum alloy conductors); concentric round—6101-T81 A2 AASC (aluminum alloy stranded conductors); concentric round—5005 AAAC OBSOLETE; miscellaneous stranded conductors; aluminum alloy (Type AL1) conductors used in the UK; aluminum alloy (Type AL3) conductors used in the UK; and concentric round ACSR conductors used in the UK. A procedure has been outlined for adding additional code word names to this specification.
SCOPE
1.1 This specification lists code word names for bare overhead electrical conductors that are recognized in North America. A procedure has been outlined for adding additional code word names to this standard. Code word names have been in existence for many years describing various conductor constructions used in North America, Europe and elsewhere in the world. Their origin is not clearly understood. The historical basis of this standard originates from code word names developed years ago by member utility companies that participated in the US Aluminum Association, Technical Committee.  
1.2 The code word names are grouped into tables of like constructions. The code word name construction can be modified with the use of suffix modifiers that identify additional construction variations. For example the type of steel core material used in an ACSR type of conductor may be modified with the letter designation “/GA3” denoting the strength and type of coating for the steel core material.  
1.3 The tables provide the applicable ASTM standard for which the conductor construction may be built to. For conductors that are unique to use in Canada, the applicable CSA International standard is referenced.  
1.4 The tables include code word names that are referenced in Canadian CSA and European CENELEC standards. The information is believed to be correct however the user of this document is encouraged to consult the applicable CSA or CENELEC standard for confirmation.  
1.5 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.

General Information

Status
Historical
Publication Date
31-Mar-2017
ICS
29.240.20 - Power transmission and distribution lines
Technical Committee
B01 - Electrical Conductors
Drafting Committee
B01.07 - Conductors of Light Metals
Current Stage
Ref Project

Relations

Replaced By
ASTM B1006-17(2023) - Standard Specification for Electrical Overhead Conductor Code Word Names
Effective Date
01-Oct-2023
Refers
ASTM B502/B502M-19 - Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
Effective Date
01-Oct-2019
Refers
ASTM B400/B400M-19 - Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors
Effective Date
01-Mar-2019
Refers
ASTM B502/B502M-10(2017) - Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
Effective Date
01-Apr-2017
Refers
ASTM B957/B957M-16 - Standard Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Overhead Electrical Conductors
Effective Date
01-Dec-2016
Refers
ASTM B958/B958M-16 - Standard Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors
Effective Date
01-Dec-2016
Refers
ASTM B498/B498M-08(2016) - Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
Effective Date
01-Oct-2016
Refers
ASTM B606/B606M-08(2016) - Standard Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforced
Effective Date
01-Oct-2016
Refers
ASTM B803/B803M-08(2016) - Standard Specification for High-Strength Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors
Effective Date
01-Oct-2016
Refers
ASTM B802/B802M-10(2016) - Standard Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)
Effective Date
01-Oct-2016
Refers
ASTM B779-14 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/TW)
Effective Date
01-Apr-2014
Refers
ASTM B778-14 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors (AAC/TW)
Effective Date
01-Apr-2014
Refers
ASTM B857-14 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
Effective Date
01-Apr-2014
Refers
ASTM B400/B400M-14 - Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors
Effective Date
01-Jan-2014
Refers
ASTM B701/B701M-13 - Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)
Effective Date
01-May-2013

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ASTM B1006-17 - Standard Specification for Electrical Overhead Conductor Code Word NamesASTM B1006-17 - Standard Specification for Electrical Overhead Conductor Code Word Names
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Technical specification
ASTM B1006-17 - Standard Specification for Electrical Overhead Conductor Code Word Names
English language
28 pages
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Standards Content (Sample)

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.
Designation:B1006 −17
Standard Specification for
1
Electrical Overhead Conductor Code Word Names
This standard is issued under the fixed designation B1006; 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.
2
1. Scope 2.2 ASTM Standards:
B231/B231M Specification for Concentric-Lay-Stranded
1.1 This specification lists code word names for bare over-
Aluminum 1350 Conductors
head electrical conductors that are recognized in North
B232/B232M Specification for Concentric-Lay-Stranded
America. A procedure has been outlined for adding additional
Aluminum Conductors, Coated-Steel Reinforced (ACSR)
codewordnamestothisstandard.Codewordnameshavebeen
B399/B399M Specification for Concentric-Lay-Stranded
in existence for many years describing various conductor
Aluminum-Alloy 6201-T81 Conductors
constructions used in NorthAmerica, Europe and elsewhere in
B400/B400M Specification for Compact Round Concentric-
the world.Their origin is not clearly understood.The historical
Lay-Stranded Aluminum 1350 Conductors
basis of this standard originates from code word names
B401 Specification for Compact Round Concentric-Lay-
developed years ago by member utility companies that partici-
Stranded Aluminum Conductors, Steel-Reinforced
pated in the USAluminumAssociation, Technical Committee.
(ACSR/COMP)
1.2 The code word names are grouped into tables of like
B498/B498M Specification for Zinc-Coated (Galvanized)
constructions. The code word name construction can be modi-
Steel Core Wire for Use in Overhead Electrical Conduc-
fied with the use of suffix modifiers that identify additional
tors
construction variations. For example the type of steel core
B502/B502M Specification for Aluminum-Clad Steel Core
material used in an ACSR type of conductor may be modified
Wire for Use in Overhead Electrical Aluminum Conduc-
with the letter designation “/GA3” denoting the strength and
tors
type of coating for the steel core material.
B549 Specification for Concentric-Lay-Stranded Aluminum
1.3 The tables provide the applicable ASTM standard for
Conductors, Aluminum-Clad Steel Reinforced for Use in
which the conductor construction may be built to. For conduc-
Overhead Electrical Conductors
tors that are unique to use in Canada, the applicable CSA
B606/B606M Specification for High-Strength Zinc-Coated
International standard is referenced.
(Galvanized) Steel Core Wire for Aluminum and
Aluminum-Alloy Conductors, Steel Reinforced
1.4 The tables include code word names that are referenced
B609/B609M Specification for Aluminum 1350 Round
in Canadian CSA and European CENELEC standards. The
Wire, Annealed and Intermediate Tempers, for Electrical
information is believed to be correct however the user of this
Purposes
document is encouraged to consult the applicable CSA or
B701/B701M Specification for Concentric-Lay-Stranded
CENELEC standard for confirmation.
Self-Damping Aluminum Conductors, Steel Reinforced
1.5 This international standard was developed in accor-
(ACSR/SD)
dance with internationally recognized principles on standard-
B778 Specification for Shaped Wire Compact Concentric-
ization established in the Decision on Principles for the
Lay-Stranded Aluminum Conductors (AAC/TW)
Development of International Standards, Guides and Recom-
B779 Specification for Shaped Wire Compact Concentric-
mendations issued by the World Trade Organization Technical
Lay-Stranded Aluminum Conductors, Steel-Reinforced
Barriers to Trade (TBT) Committee.
(ACSR/TW)
2. Referenced Documents
B802/B802M Specification for Zinc–5 % Aluminum-
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
2.1 The following documents of the issue in effect on date
Conductors, Steel Reinforced (ACSR)
of material purchase form a part of this specification to the
B803/B803M Specification for High-Strength Zinc–5 %
extent referenced herein:
1
This specification is under the jurisdiction of ASTM Committee B01 on
2
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Conductors of Light Metals. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved April 1, 2017. Published May 2017. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
B1006-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

...

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: B1006 − 17
Standard Specification for
1
Electrical Overhead Conductor Code Word Names
This standard is issued under the fixed designation B1006; 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.
2
1. Scope 2.2 ASTM Standards:
B231/B231M Specification for Concentric-Lay-Stranded
1.1 This specification lists code word names for bare over-
Aluminum 1350 Conductors
head electrical conductors that are recognized in North
B232/B232M Specification for Concentric-Lay-Stranded
America. A procedure has been outlined for adding additional
Aluminum Conductors, Coated-Steel Reinforced (ACSR)
code word names to this standard. Code word names have been
B399/B399M Specification for Concentric-Lay-Stranded
in existence for many years describing various conductor
Aluminum-Alloy 6201-T81 Conductors
constructions used in North America, Europe and elsewhere in
B400/B400M Specification for Compact Round Concentric-
the world. Their origin is not clearly understood. The historical
Lay-Stranded Aluminum 1350 Conductors
basis of this standard originates from code word names
B401 Specification for Compact Round Concentric-Lay-
developed years ago by member utility companies that partici-
Stranded Aluminum Conductors, Steel-Reinforced
pated in the US Aluminum Association, Technical Committee.
(ACSR/COMP)
1.2 The code word names are grouped into tables of like
B498/B498M Specification for Zinc-Coated (Galvanized)
constructions. The code word name construction can be modi-
Steel Core Wire for Use in Overhead Electrical Conduc-
fied with the use of suffix modifiers that identify additional
tors
construction variations. For example the type of steel core
B502/B502M Specification for Aluminum-Clad Steel Core
material used in an ACSR type of conductor may be modified
Wire for Use in Overhead Electrical Aluminum Conduc-
with the letter designation “/GA3” denoting the strength and
tors
type of coating for the steel core material.
B549 Specification for Concentric-Lay-Stranded Aluminum
1.3 The tables provide the applicable ASTM standard for
Conductors, Aluminum-Clad Steel Reinforced for Use in
which the conductor construction may be built to. For conduc-
Overhead Electrical Conductors
tors that are unique to use in Canada, the applicable CSA
B606/B606M Specification for High-Strength Zinc-Coated
International standard is referenced.
(Galvanized) Steel Core Wire for Aluminum and
Aluminum-Alloy Conductors, Steel Reinforced
1.4 The tables include code word names that are referenced
B609/B609M Specification for Aluminum 1350 Round
in Canadian CSA and European CENELEC standards. The
Wire, Annealed and Intermediate Tempers, for Electrical
information is believed to be correct however the user of this
Purposes
document is encouraged to consult the applicable CSA or
B701/B701M Specification for Concentric-Lay-Stranded
CENELEC standard for confirmation.
Self-Damping Aluminum Conductors, Steel Reinforced
1.5 This international standard was developed in accor-
(ACSR/SD)
dance with internationally recognized principles on standard-
B778 Specification for Shaped Wire Compact Concentric-
ization established in the Decision on Principles for the
Lay-Stranded Aluminum Conductors (AAC/TW)
Development of International Standards, Guides and Recom-
B779 Specification for Shaped Wire Compact Concentric-
mendations issued by the World Trade Organization Technical
Lay-Stranded Aluminum Conductors, Steel-Reinforced
Barriers to Trade (TBT) Committee.
(ACSR/TW)
2. Referenced Documents
B802/B802M Specification for Zinc–5 % Aluminum-
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
2.1 The following documents of the issue in effect on date
Conductors, Steel Reinforced (ACSR)
of material purchase form a part of this specification to the
B803/B803M Specification for High-Strength Zinc–5 %
extent referenced herein:
1
This specification is under the jurisdiction of ASTM Committee B01 on
2
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Conductors of Light Metals. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved April 1, 2017. Published May 2017. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
B1006-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B1006 − 17
Aluminum-Mischmetal Alloy-Coated Steel Core Wire
...

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ASTM B1006-17(2023)(Specification)
Standard Specification for Electrical Overhead Conductor Code Word Names

ABSTRACT
This specification lists code word names for bare overhead electrical conductors that are recognized in North America. Code word names are used to describe various conductor constructions used in North America, Europe and elsewhere in the world. The code word name construction can be modified with the use of suffix modifiers that identify additional construction variations. For example, the type of steel core material used in an ACSR (aluminum conductors, steel reinforced) type of conductor may be modified with the letter designation "/GA3" denoting the strength and type of coating for the steel core material. The code word names are grouped into tables of like constructions. The tables provide the applicable ASTM standard for which the conductor construction may be built to. They include code word names that are referenced in Canadian Standards Association (CSA) and European Committee for Electrotechnical Standardization (CENELEC) standards.
SCOPE
1.1 This specification lists code word names for bare overhead electrical conductors that are recognized in North America. A procedure has been outlined for adding additional code word names to this standard. Code word names have been in existence for many years describing various conductor constructions used in North America, Europe and elsewhere in the world. Their origin is not clearly understood. The historical basis of this standard originates from code word names developed years ago by member utility companies that participated in the US Aluminum Association, Technical Committee.  
1.2 The code word names are grouped into tables of like constructions. The code word name construction can be modified with the use of suffix modifiers that identify additional construction variations. For example the type of steel core material used in an ACSR type of conductor may be modified with the letter designation “/GA3” denoting the strength and type of coating for the steel core material.  
1.3 The tables provide the applicable ASTM standard for which the conductor construction may be built to. For conductors that are unique to use in Canada, the applicable CSA International standard is referenced.  
1.4 The tables include code word names that are referenced in Canadian CSA and European CENELEC standards. The information is believed to be correct however the user of this document is encouraged to consult the applicable CSA or CENELEC standard for confirmation.  
1.5 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.

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SCOPE
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Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Alloy Reinforced (ACAR, 1350/6201)

ABSTRACT
This specification covers concentric-lay-stranded conductors made from round aluminum 1350-H19 (extra hard) wires and round aluminum-alloy 6201-T81 (hard, solution heat treated, cold worked, and then artificially aged) core wires for use as overhead electrical conductors. Conductors shall conform to construction requirements in terms of mass, mass per unit length, recommended reel sizes, and shipping lengths. Wires shall also be tested to evaluate their conformance to physical, mechanical, and electrical properties such as density, cross sectional area, breaking strength, and mass electrical resistance.
SCOPE
1.1 This specification covers concentric-lay-stranded conductors made from round aluminum 1350-H19 (extra hard) wires and round aluminum-alloy 6201-T81 (hard: solution heat treated, cold worked, and then artificially aged) core wires for use as overhead electrical conductors (Explanatory Note 1).
Note 1: The aluminum, alloy, and temper designations conform to ANSI H35.1/ANSI H35.1[M]. Aluminum 1350 and Alloy 6201 correspond to unified numbering system A91350 and A96201, respectively, in accordance with Practice E527.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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ASTM
ASTM B779-22(Specification)
Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/TW)

ABSTRACT
This specification covers shaped wire compact concentric-lay-stranded aluminum conductor, steel-reinforced (ACSR/TW) and its component wires for use as overhead electrical conductors. Requirements for (1) wire stranding (2) tensile strength and elongation, (3) joints such as electric-butt welds, electric-butt cold-upset welds, or cold-pressure welds, and (4) lay length, diameter, direction, and factor are detailed. The construction requirements include: nominal aluminum cross sectional area, conductor type, nominal number of aluminum wires, number of layers, number and diameter of the steel core wire, mass per unit length, rated strength, and outside diameter of the shaped wire compact. The methods of determining mass per unit length, cross-section, and electrical resistance of the stranded conductor are given. Mechanical and electrical tests shall be performed before stranding.
SCOPE
1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductor, steel-reinforced (ACSR/TW) and its component wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Note 1: ACSR/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). The conductors consist of a central core of round steel wire(s) surrounded by two or more layers of trapezoidal aluminum 1350-H19 wires. Different strandings of the same size of conductor are identified by type, which is the approximate ratio of steel area to aluminum area expressed in percent (Table 1, Table 2 and Table 3). For the purpose of this specification, the sizes listed in Table 1 and Table 2 are tabulated on the basis of the finished conductor having an area or outside diameter equal to that of specific sizes of standard ACSR so as to facilitate conductor selection.
Note 2: The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to Unified Numbering System (UNS) A91350 in accordance with Practice E527.    
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.

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ASTM
ASTM B701/B701M-22e1(Specification)
Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)

ABSTRACT
This specification covers concentric-lay-stranded self-damping aluminum conductors, steel-reinforced, and its component wires for use as overhead electrical conductors. The tensile strength and elongation requirements of the round and trapezoidal wires shall be the same except for the shape and diameter tolerance. Joints shall not be made in the finished steel wires. The lay factor and direction are specified. The strength and electrical resistance of a complete conductor are calculated. Tests for mechanical and electrical properties of aluminum and steel core wires shall be made before stranding. Gap dimensions shall be measured during fabrication of the conductor.
SCOPE
1.1 This specification covers concentric-lay-stranded self-damping aluminum conductor, steel-reinforced (ACSR/SD), and its component wires for use as overhead electrical conductors (Explanatory Notes 1 and 2).  
1.2 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 non-conformance 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.  
1.2.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.
Note 1: ACSR/SD is designed to control aeolian vibration by integral damping. The conductors consist of a central core of a round steel wire or wires surrounded by two layers of trapezoidal aluminum 1350-H19 wires or two layers of trapezoidal aluminum 1350-H19 wires and one layer of round aluminum 1350-H19 wires (Fig. 1). The trapezoidal-wire layers are separated from each other and from the steel core by two small annular gaps that provide the conductors self-damping characteristics. The round aluminum wires are in tight layer contact between themselves and the underlying trapezoidal wire layer. Different strandings of the same size of conductor are identified by type, which is the approximate ratio of steel area to aluminum area, expressed in percent (Table 1 and Table 2).  
FIG. 1 Illustrations of Typical ACSR/SD Strandings
Note 2: The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in accordance with Practice E527.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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ASTM
ASTM B778-22(Specification)
Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors (AAC/TW)

ABSTRACT
This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors. The trapezoidal aluminum wires shall meet the prescribed tensile strength and elongation requirements. Electric-butt welds, electric-butt cold-upset welds, or cold-pressure welds may be made in the individual aluminum wires during the stranding process. Requirements for the lay and construction of the conductor are detailed. The methods of determining the rated strength, breaking strength, mass, and electrical resistance are given. Tests for mechanical and electrical properties of aluminum wires shall be made before stranding. For the purpose of calculating mass per unit length, cross-sections, and the like, the density of aluminum to be taken is specified.
SCOPE
1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2).  
1.2 The values stated in inch-pound units are to be regarded as the standard with the exception of temperature and resistivity. The SI equivalents of inch-pound units may be approximate.  
Note 1: AAC/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). The conductors consist of a central core of one round aluminum wire or a seven-strand compact round core surrounded by two or more layers of trapezoidal aluminum 1350-H19 wires. For the purposes of this specification, the sizes listed are tabulated on the basis of the finished conductor having an area equal to that of specific sizes of standard AAC (Table 1) or in fixed diameter increments (Table 2) so as to facilitate conductor selection.
Note 2: The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to Unified Numbering System (UNS) A91350 in accordance with Practice E527.    
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.

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