ASTM B682-01(2016)

Standard Specification for Standard Metric Sizes of Electrical Conductors

ABSTRACT
This specification prescribes the recommended standard metric sizes of solid round electrical conductors. The standard diameters of metric sizes of wires are preferred numbers calculated in accordance with the conventional mathematical principles. The standard metric size of stranded conductors and equivalent cross-sectional areas shall be designated.
SCOPE
1.1 This specification covers and prescribes the recommended standard metric sizes of solid round electrical conductors.  
1.2 This specification prescribes the recommended standard metric size designations of stranded electrical conductors (see Explanatory Note 1).
Note 1: Physical properties, construction requirements, and manufacturing tolerances for specific products should be included in individual product specifications developed in accordance with appropriate sizes in this specification.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3.1 Exceptions — 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. Rounded values appear in Table 1. (A) The inch diameters, square inch areas, and circular mil areas are rounded values calculated from the metric diameters.

General Information

• Status: Published
• Publication Date: 30-Sep-2016
• ICS: 29.050 - Superconductivity and conducting materials
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.02 - Methods of Test and Sampling Procedure

Relations

• Replaces: ASTM B682-01(2009)e1 - Standard Specification for Standard Metric Sizes of Electrical Conductors
• Effective Date: 01-Oct-2016
• Refers: ASTM F205-94(2020) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing (Withdrawn 2023)
• Effective Date: 01-May-2020
• Refers: ASTM F205-94(2015) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
• Effective Date: 01-Jul-2015
• Refers: ASTM F205-94(2010)e1 - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
• Effective Date: 01-Dec-2010
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM E29-06b - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Nov-2006
• Refers: ASTM E29-06a - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Sep-2006
• Refers: ASTM E29-06 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-May-2006
• Refers: ASTM F205-94(2005) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
• Effective Date: 01-Jan-2005
• Refers: ASTM E29-04 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Dec-2004
• Refers: ASTM E29-02e1 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-2002
• Refers: ASTM F205-94(1999) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
• Effective Date: 10-Dec-1999
• Refers: ASTM E29-93a(1999) - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-1999
• Referred By: ASTM B524/B524M-23 - Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Alloy Reinforced (ACAR, 1350/6201)
• Effective Date: 01-Oct-2016
• Referred By: ASTM B399/B399M-23 - Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 6201-T81 and 6201-T83 Conductors
• Effective Date: 01-Oct-2016

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:B682 −01 (Reapproved 2016)
Standard Specification for
Standard Metric Sizes of Electrical Conductors
This standard is issued under the fixed designation B682; 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.
1. Scope 2.2 IEC Standards:
IEC 182 Basic Dimensions of Winding Wires
1.1 This specification covers and prescribes the recom-
IEC228 NominalCross-SectionalAreasandCompositionof
mended standard metric sizes of solid round electrical conduc-
Conductors of Insulated Cables
tors.
2.3 ISO Standards:
1.2 This specification prescribes the recommended standard
ISO R388 Metric Series for Basic Thickness of Sheet and
metric size designations of stranded electrical conductors (see
Diameters of Wire
Explanatory Note 1).
NOTE 1—Physical properties, construction requirements, and manufac-
3. Standard Reference Temperature
turing tolerances for specific products should be included in individual
3.1 Forthepurposeofthisspecification,allwiredimensions
product specifications developed in accordance with appropriate sizes in
and properties shall be considered as occurring at the interna-
this specification.
tionally standardized reference temperature of 20°C.
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4. Preferred Numbers
standard.
4.1 The diameters in Table 1 and preferred cross-sectional
1.3.1 Exceptions — For conductor sizes designated by
AWG or kcmil, the requirements in SI units have been areas in Table 2 are rounded preferred numbers from R
(Renard) series in accordance with ISO R388.
numerically converted from corresponding values, stated or
derived,ininch-poundunits.Forconductorsizesdesignatedby
NOTE 2—The use of preferred numbers has many advantages and the
SI units only, the requirements are stated or derived in SI units.
values selected do not vary significantly from the calculated numbers of
Rounded values appear in Table 1.
the series used. The preferred and second preference size designations,
using a Renard series of numbers, provides a schedule of interrelated sizes
1.4 This international standard was developed in accor-
for aluminum and copper conductors.
dance with internationally recognized principles on standard-
NOTE 3—Should sizes be needed either larger or smaller than those
ization established in the Decision on Principles for the
listed in Table 1 or Table 2, the respective R series may be expanded
upward or downward.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Standard Rules for Rounding
Barriers to Trade (TBT) Committee.
5.1 All calculations for dimensions and properties, other
2. Referenced Documents
than as provided in Section 4, shall be rounded in the final
values only, in accordance with the rounding method of
2.1 ASTM Standards:
Practice E29.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
6. Standard Round-Wire Diameters (Note 2)
F205 Test Method for Measuring Diameter of Fine Wire by
6.1 The standard diameters of metric sizes of wires are
Weighing
preferred numbers calculated in accordance with the conven-
tional mathematical principles of an R series of 20 numbers
This specification is under the jurisdiction of ASTM Committee B01 on
from 1 to 10 with multiples and submultiples of 10.
Electrical Conductorsand is the direct responsibility of Subcommittee B01.02 on
6.2 The wire diameters shall be expressed to no more than
Methods of Test and Sampling Procedure.
Current edition approved Oct. 1, 2016. Published October 2016. Originally
three significant figures plus zeros.
ɛ1
approved in 1981. Last previous edition approved in 2009 as B682 – 01 (2009) .
DOI: 10.1520/B0682-01R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM International Electrotechnical Commission and International Organization for
Standards volume information, refer to the standard’s Document Summary page on Standardization documents are available from the American National Standards
the ASTM website. Institute (ANSI), 11 West 42nd St., 13th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B682−01 (2016)
TABLE 1 Standard Metric Diameters and Cross-Sectional Areas of Solid Round Wires at 20°C
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
18.0 0.7087 254.5 0.3944 502.2
16.0 0.6299 201.1 0.3116 396.8
14.0 0.5518 153.9 0.2386 303.8
12.5 0.4921 122.7 0.1902 242.2
11.2 0.4409 98.52 0.1527 194.4
10.0 0.3937 78.54 0.1217 155.0
9.00 0.3543 63.62 0.09861 125.6
8.00 0.3150 50.27 0.07791 99.2
7.10 0.2795 39.59 0.06137 78.14
6.30 0.2480 31.17 0.04832 61.52
5.60 0.2205 24.63 0.03818 48.61
5.00 0.1969 19.63 0.03043 38.75
4.50 0.1772 15.90 0.02465 31.39
4.00 0.1575 12.57 0.01948 24.80
3.55 0.1398 9.898 0.01534 19.53
3.15 0.1240 7.793 0.01208 15.38
2.80 0.1102 6.158 0.00954 12.15
2.50 0.0984 4.909 0.00761 9.69
2.24 0.0882 3.941 0.00611 7.78
2.00 0.0787 3.142 0.00487 6.20
1.80 0.0709 2.545 0.00394 5.02
1.60 0.0630 2.011 0.00312 3.97
1.40 0.0551 1.539 0.00239 3.04
1.25 0.0492 1.227 0.00190 2.42
1.12 0.0441 0.985 0.00153 1.94
1.00 0.0394 0.785 0.00122 1.55
0.900 0.0354 0.636 0.000986 1.26
0.800 0.0315 0.503 0.000779 0.992
0.710 0.0280 0.396 0.000614 0.781
0.630 0.0248 0.312 0.000483 0.615
0.560 0.0220 0.246 0.000382 0.486
0.500 0.0197 0.196 0.000304 0.388
0.450 0.0177 0.159 0.000247 0.314
0.400 0.0157 0.126 0.000195 0.248
0.355 0.0140 0.0990 0.000153 0.195
0.315 0.0124 0.0779 0.000121 154
0.280 0.0010 0.0616 0.0000954 122
0.250 0.0098 0.0491 0.0000761 96.9
0.224 0.0088 0.0394 0.0000611 77.8
0.200 0.0079 0.0314 0.0000487 62.0
0.180 0.0071 0.0254 0.0000394 50.2
0.160 0.0063 0.0201 0.0000312 39.7
0.140 0.0055 0.0154 0.0000239 30.4
0.125 0.0049 0.0123 0.0000190 24.2
0.112 0.0044 0.00985 0.0000153 19.4
0.100 0.0039 0.00785 0.0000122 15.5
0.090 0.0035 0.00636 0.00000986 12.6
0.080 0.0031 0.00503 0.00000779 9.92
0.071 0.0028 0.00396 0.00000614 7.81
0.063 0.0025 0.00312 0.00000483 6.15
0.056 0.0022 0.00246 0.00000382 4.86
0.050 0.0020 0.00196 0.00000304 3.88
0.045 0.00177 0.00159 0.00000247 3.14
0.040 0.00157 0.00126 0.00000195 2.48
0.036 0.00142 0.00102 0.00000158 2.01
0.032 0.00126 0.000804 0.00000125 1.59
0.028 0.00110 0.000616 0.000000954 1.22
0.025 0.00098 0.000491 0.000000761 0.969
0.022 0.00088 0.000394 0.000000611 0.778
B682−01 (2016)
TABLE 1 Continued
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
0.0200 0.00079 0.000314 0.000000487 0.620
0.0180 0.00071 0.000254 0.000000394 0.502
0.0160 0.00063 0.000201 0.000000312 0.397
0.0140 0.00055 0.000154 0.000000239 0.304
0.0125 0.00049 0.000123 0.000000190 0.2
...