ASTM B174-10(2015)
(Specification)Standard Specification for Bunch-Stranded Copper Conductors for Electrical Conductors
Standard Specification for Bunch-Stranded Copper Conductors for Electrical Conductors
ABSTRACT
This specification covers bare bunch-stranded conductors 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. Bunch-stranded conductors are classified as Class I, Class J, Class K, Class L, Class M, Class O, Class P, and Class Q, according to wire diameter. Requirements for conductor joints, lay length, wires, and strand construction are given. Electrical and elongation tests of wires composing the conductors shall be performed. If a tinning, lead-coating, or lead-alloy-coating test is required, it shall be made on the wires prior to stranding. The methods of determining mass, cross sections, and electrical resistance are detailed. The density of copper to be taken in the calculations is prescribed.
SCOPE
1.1 This specification covers bare bunch-stranded conductors made from round copper wires, either uncoated or coated with tin, lead, or lead-alloy for use as electrical conductors (Explanatory Note 1 and Explanatory 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 either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3.1 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.
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Designation:B174 −10 (Reapproved 2015)
Standard Specification for
Bunch-Stranded Copper Conductors for Electrical
Conductors
This standard is issued under the fixed designation B174; 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 U.S. Department of Defense.
1. Scope B189 Specification for Lead-Coated and Lead-Alloy-Coated
Soft Copper Wire for Electrical Purposes
1.1 This specification covers bare bunch-stranded conduc-
B193 Test Method for Resistivity of Electrical Conductor
tors made from round copper wires, either uncoated or coated
Materials
with tin, lead, or lead-alloy for use as electrical conductors
B263 Test Method for Determination of Cross-Sectional
(Explanatory Note 1 and Explanatory Note 2).
Area of Stranded Conductors
1.2 Coated wires shall include only those wires with fin-
B354 Terminology Relating to Uninsulated Metallic Electri-
ished diameters and densities substantially equal to the respec-
cal Conductors
tive diameters and densities of uncoated wires.
2.3 American National Standard:
1.3 The values stated in either SI units or inch-pound units
ANSI C42.35 Definitions of Electrical Terms
are to be regarded separately as standard. The values stated in
3. Classification
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
3.1 For the purpose of this specification bunch-stranded
values from the two systems may result in non-conformance
conductors are classified as shown in Tables 1 and 2.
with the standard.
1.3.1 For conductor sizes designated byAWG or kcmil, the
4. Ordering Information
requirements in SI units have been numerically converted from
4.1 Orders for material under this specification shall include
corresponding values, stated or derived, in inch-pound units.
the following information:
For conductor sizes designated by SI units only, the require-
4.1.1 Quantity of each size and class,
ments are stated or derived in SI units.
4.1.2 Conductor size: circular-mil area or AWG (see 7.1),
4.1.3 Class (Section 3 and Table 3),
2. Referenced Documents
4.1.4 Whether coated or uncoated; if coated, designate type
2.1 The following documents of the issue in effect at the
of coating (see 11.1),
time of reference form a part of this specification to the extent
4.1.5 Maximum length of lay (see 6.3),
referenced herein:
4.1.6 Whether separator is required (see 7.2),
2.2 ASTM Standards:
4.1.7 Package size (see section 14.1),
B3 Specification for Soft or Annealed Copper Wire
4.1.8 Specialpackagemarking,ifrequired(Section14),and
B33 Specification for Tin-Coated Soft or Annealed Copper
4.1.9 Place of inspection (Section 13).
Wire for Electrical Purposes
B172 Specification for Rope-Lay-Stranded Copper Conduc- 5. Joints
torsHavingBunch-StrandedMembers,forElectricalCon-
5.1 Necessary joints in wires shall be made in accordance
ductors
with accepted commercial practice.
5.2 Joints shall be so constructed and so disposed through-
This specification is under the jurisdiction of ASTM Committee B01 on
out the conductor that the diameter or configuration of the
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
completed conductor is not substantially affected, and so that
Conductors of Copper and Copper Alloys.
Current edition approved April 1, 2015. Published April 2015. Originally
the flexibility of the completed conductor is not adversely
approved in 1941. Last previous edition approved in 2010 as B174 – 10. DOI:
affected.
10.1520/B0174-10R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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
B174−10 (2015)
A
TABLE 1 A Classification and Construction Requirements of Bunch-Stranded Conductors —Class I Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class I Nominal dc Maximum dc Nominal dc Maximum dc Nominal dc Maximum dc Nominal dc Maximum dc
AWG Nominal resistance resistance resistance resistance resistance resistance resistance resistance
Wire @20C @20C @20C @20C @20C @20C @20C @20C
Diameter
0.0201 In.
(0.511 mm)
cmil mm 24 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
20820 10.5 7 52 0.508 0.518 1.67 1.70 0.528 0.539 1.73 1.77
16510 8.37 8 41 0.641 0.654 2.10 2.14 0.666 0.679 2.19 2.23
13090 6.63 9 33 0.808 0.824 2.65 2.70 0.840 0.857 2.76 2.81
10380 5.26 10 26 1.02 1.04 3.34 3.41 1.06 1.08 3.48 3.55
A
TABLE1BClassification and Construction Requirements of Bunch-Stranded Conductors—Class J Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class J Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG Nominal dc dc dc dc dc dc dc dc
Wire resistance resistance resistance resistance resistance resistance resistance resistance
Diameter @20C @20C @20C @20C @20C @20C @20C @20C
0.0126 In.
(0.320 mm)
cmil mm 28 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 65 1.02 1.04 3.34 3.41 1.08 1.10 3.54 3.61
6530 3.31 12 41 1.62 1.65 5.31 5.42 1.72 1.75 5.64 5.76
4110 2.08 14 26 2.57 2.62 8.44 8.61 2.73 2.79 8.96 9.14
2580 1.31 16 16 4.10 4.18 13.5 13.7 4.35 4.44 14.3 14.6
1620 0.821 18 10 6.53 6.66 21.4 21.9 6.94 7.07 22.8 23.2
1020 0.517 20 7 10.4 10.6 34.0 34.7 11.0 11.2 36.1 36.8
A
TABLE1CClassification and Construction Requirements of Bunch-Stranded Conductors—Class K Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class K Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG Nominal dc dc dc dc dc dc dc dc
Wire resistance resistance resistance resistance resistance resistance resistance resistance
Diameter @20C @20C @20C @20C @20C @20C @20C @20C
0.0100 In.
(0.254 mm)
cmil mm 30 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 104 1.02 1.04 3.35 3.41 1.09 1.12 3.58 3.65
6530 3.31 12 65 1.62 1.65 5.31 5.42 1.74 1.77 5.71 5.82
4110 2.08 14 41 2.57 2.62 8.43 8.60 2.76 2.82 9.06 9.24
2580 1.31 16 26 4.10 4.18 13.5 13.7 4.40 4.49 14.4 14.7
1620 0.821 18 16 6.53 6.66 21.4 21.9 7.01 7.15 23.0 23.5
B
1020 0.517 20 10 10.4 10.6 34.1 34.8 11.1 11.4 36.4 37.1
640 0.324 22 7 16.5 16.9 54.1 55.2 17.7 18.1 58.1 59.2
A
The constructions shown in these tables are typical of those used in the industry. It is intended that these tables preclude other constructions which may be desirable
for specific applications. The constructions shown provide for a finished stranded conductor approximately of the area indicated. When specified by the purchaser, the
number or sizes of wire may be increased to provide additional area to compensate for draw-down during subsequent processing.
B
Asanalternatetotheconstructionshownfor20AWG,ClassK;forhook-upwireconstructionmayconsistof8wires0.0100in.(0.254mm)diameteraroundwireof0.0142
in. (0.361 mm) diameter.
6. Lay 6.2 The direction of lay shall be at the option of the
manufacturer unless otherwise specified.
6.1 Conductors of the same size and description furnished
on one order shall have the same lay.
B174−10 (2015)
TABLE 2 Classification and Construction Requirements of Bunch-Stranded Conductors—Class L, M, O, P and Q Bunch Stranded
A
Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size, and
Minimum Number
of Wires
Size, Class L Class M Class O Class P Class Q Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG dc dc dc dc dc dc dc dc
resistanceresistanceresistanceresistanceresistanceresistanceresistanceresistance
@20C @20C @20C @20C @20C @20C @20C @20C
Nominal Nominal Nominal Nominal Nominal
Wire Wire Wire Wire Wire
Diameter Diameter Diameter Diameter Diameter
0.0080 In.0.0063 In.0.0050 In.0.0040 In.0.0031 In.
(0.511 (0.320 (0.254 (0.320 (0.254
mm) mm) mm) mm) mm)
cmil mm 32 AWG 34 AWG 36 AWG 38 AWG 40 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 165 . . . . 1.02 1.04 3.34 3.41 1.09 1.12 3.58 3.65
6530 3.31 12 104 . . . . 1.62 1.65 5.31 5.42 1.74 1.77 5.71 5.82
4110 2.08 14 65 104 . . . 2.57 2.62 8.43 8.60 2.76 2.82 9.06 9.24
2580 1.31 16 41 65 104 165 . 4.10 4.18 13.5 13.7 4.40 4.49 14.4 14.7
1620 0.821 18 26 41 65 104 165 6.53 6.66 21.4 21.9 7.00 7.15 23.0 23.4
1020 0.517 20 16 26 41 65 104 10.4 10.6 34.1 34.8 11.1 11.4 36.4 37.1
640 0.324 22 . 19 . . . 16.5 16.9 54.1 55.2 17.7 18.1 58.1 59.2
404 0.205 24 7 . 19 . . 26.2 26.7 86.0 87.7 28.1 28.7 92.2 94.0
253 0.128 26 . 7 . . . 41.8 42.6 137 140 44.9 45.8 147 150
A
Theconstructionsshowninthistablearetypicalofthoseusedintheindustry.Itisintendedthatthistableprecludeotherconstructionswhichmaybedesirableforspecific
applications.Theconstructionsshownprovideforafinishedstrandedconductorapproximatelyoftheareaindicated.Whenspecifiedbythepurchaser,thenumberorsizes
of wire may be increased to provide additional area to compensate for draw-down during subsequent processing.
TABLE 3 Maximum Length of Lay for Bunch-Stranded
7.2 If a separator is required to be furnished with the
Conductors
conductor, it shall be at the option of the manufacturer unless
Maximum Length of Lay
otherwise specified by the purchaser as to requirements for the
Area of
Size, Nominal Column Column
kind and thickness of material and its application details.
Cross Section
AWG Diameter A B
cmil mm in. mm in. mm in. mm
8. Physical and Electrical Tests
20 820 10.5 7 0.167 4.24 3.00 76.20 3.00 76.20
16 510 8.37 8 0.149 3.78 2.75 69.85 2.75 69.85
8.1 Tests for the electrical properties of wires composing
13 090 6.63 9 0.133 3.38 2.50 63.50 2.50 63.50
conductors made from
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: B174 − 10 B174 − 10 (Reapproved 2015)
Standard Specification for
Bunch-Stranded Copper Conductors for Electrical
Conductors
This standard is issued under the fixed designation B174; 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 U.S. Department of Defense.
1. Scope
1.1 This specification covers bare bunch-stranded conductors made from round copper wires, either uncoated or coated with tin,
lead, or lead-alloy for use as electrical conductors (Explanatory Note 1 and Explanatory 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 either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.3.1 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.
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 ASTM Standards:
B3 Specification for Soft or Annealed Copper Wire
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:
ANSI C42.35 Definitions of Electrical Terms
3. Classification
3.1 For the purpose of this specification bunch-stranded conductors are classified as shown in Tables 1 and 2.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Quantity of each size and class,
4.1.2 Conductor size: circular-mil area or AWG (see 7.1),
4.1.3 Class (Section 3 and Table 3),
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 April 1, 2010April 1, 2015. Published May 2010April 2015. Originally approved in 1941. Last previous edition approved in 20022010 as
ε1
B174 – 02B174 (2007) – 10. . DOI: 10.1520/B0174-10.10.1520/B0174-10R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
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
B174 − 10 (2015)
A
TABLE 1 A Classification and Construction Requirements of Bunch-Stranded Conductors —Class I Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class I Nominal dc Maximum dc Nominal dc Maximum dc Nominal dc Maximum dc Nominal dc Maximum dc
AWG Nominal resistance resistance resistance resistance resistance resistance resistance resistance
Wire @20C @20C @20C @20C @20C @20C @20C @20C
Diameter
0.0201 In.
(0.511 mm)
cmil mm 24 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
20820 10.5 7 52 0.508 0.518 1.67 1.70 0.528 0.539 1.73 1.77
16510 8.37 8 41 0.641 0.654 2.10 2.14 0.666 0.679 2.19 2.23
13090 6.63 9 33 0.808 0.824 2.65 2.70 0.840 0.857 2.76 2.81
10380 5.26 10 26 1.02 1.04 3.34 3.41 1.06 1.08 3.48 3.55
A
TABLE 1 B Classification and Construction Requirements of Bunch-Stranded Conductors—Class J Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class J Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG Nominal dc dc dc dc dc dc dc dc
Wire resistance resistance resistance resistance resistance resistance resistance resistance
Diameter @20C @20C @20C @20C @20C @20C @20C @20C
0.0126 In.
(0.320 mm)
cmil mm 28 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 65 1.02 1.04 3.34 3.41 1.08 1.10 3.54 3.61
6530 3.31 12 41 1.62 1.65 5.31 5.42 1.72 1.75 5.64 5.76
4110 2.08 14 26 2.57 2.62 8.44 8.61 2.73 2.79 8.96 9.14
2580 1.31 16 16 4.10 4.18 13.5 13.7 4.35 4.44 14.3 14.6
1620 0.821 18 10 6.53 6.66 21.4 21.9 6.94 7.07 22.8 23.2
1020 0.517 20 7 10.4 10.6 34.0 34.7 11.0 11.2 36.1 36.8
A
TABLE 1 C Classification and Construction Requirements of Bunch-Stranded Conductors—Class K Bunch Stranded Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size,
and
Minimum
Number
of Wires
Size, Class K Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG Nominal dc dc dc dc dc dc dc dc
Wire resistance resistance resistance resistance resistance resistance resistance resistance
Diameter @20C @20C @20C @20C @20C @20C @20C @20C
0.0100 In.
(0.254 mm)
cmil mm 30 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 104 1.02 1.04 3.35 3.41 1.09 1.12 3.58 3.65
6530 3.31 12 65 1.62 1.65 5.31 5.42 1.74 1.77 5.71 5.82
4110 2.08 14 41 2.57 2.62 8.43 8.60 2.76 2.82 9.06 9.24
2580 1.31 16 26 4.10 4.18 13.5 13.7 4.40 4.49 14.4 14.7
1620 0.821 18 16 6.53 6.66 21.4 21.9 7.01 7.15 23.0 23.5
B
1020 0.517 20 10 10.4 10.6 34.1 34.8 11.1 11.4 36.4 37.1
640 0.324 22 7 16.5 16.9 54.1 55.2 17.7 18.1 58.1 59.2
A
The constructions shown in these tables are typical of those used in the industry. It is intended that these tables preclude other constructions which may be desirable
for specific applications. The constructions shown provide for a finished stranded conductor approximately of the area indicated. When specified by the purchaser, the
number or sizes of wire may be increased to provide additional area to compensate for draw-down during subsequent processing.
B
As an alternate to the construction shown for 20 AWG, Class K; for hook-up wire construction may consist of 8 wires 0.0100 in. (0.254 mm) diameter around wire of 0.0142
in. (0.361 mm) diameter.
4.1.4 Whether coated or uncoated; if coated, designate type of coating (see 11.1),
4.1.5 Maximum length of lay (see 6.3),
4.1.6 Whether separator is required (see 7.2),
4.1.7 Package size (see section 14.115.1),),
4.1.8 Special package marking, if required (Section 14), and
4.1.9 Place of inspection (Section 13).
B174 − 10 (2015)
TABLE 2 Classification and Construction Requirements of Bunch-Stranded Conductors—Class L, M, O, P and Q Bunch Stranded
A
Conductors
Area of Classification, Uncoated Copper Coated Copper
Cross Section Size, and
Minimum Number
of Wires
Size, Class L Class M Class O Class P Class Q Nominal Maximum Nominal Maximum Nominal Maximum Nominal Maximum
AWG dc dc dc dc dc dc dc dc
resistanceresistanceresistanceresistance resistance resistanceresistanceresistance
@20C @20C @20C @20C @20C @20C @20C @20C
Nominal Nominal Nominal Nominal Nominal
Wire Wire Wire Wire Wire
Diameter Diameter Diameter Diameter Diameter
0.0080 In. 0.0063 In. 0.0050 In. 0.0040 In. 0.0031 In.
(0.511 (0.320 (0.254 (0.320 (0.254
mm) mm) mm) mm) mm)
cmil mm 32 AWG 34 AWG 36 AWG 38 AWG 40 AWG ohm/kft ohm/kft ohm/km ohm/km ohm/kft ohm/kft ohm/km ohm/km
10380 5.26 10 165 . . . . 1.02 1.04 3.34 3.41 1.09 1.12 3.58 3.65
6530 3.31 12 104 . . . . 1.62 1.65 5.31 5.42 1.74 1.77 5.71 5.82
4110 2.08 14 65 104 . . . 2.57 2.62 8.43 8.60 2.76 2.82 9.06 9.24
2580 1.31 16 41 65 104 165 . 4.10 4.18 13.5 13.7 4.40 4.49 14.4 14.7
1620 0.821 18 26 41 65 104 165 6.53 6.66 21.4 21.9 7.00 7.15 23.0 23.4
1020 0.517 20 16 26 41 65 104 10.4 10.6 34.1 34.8 11.1 11.4 36.4 37.1
640 0.324 22 . 19 . . . 16.5 16.9 54.1 55.2 17.7 18.1 58.1 59.2
404 0.205 24 7 . 19 . . 26.2 26.7 86.0 87.7 28.1 28.7 92.2 94.0
253 0.128 26 . 7 . . . 41.8 42.6 137 140 44.9 45.8 147 150
A
The constructions shown in this table are typical of those used in the industry. It is intended that this table preclude other constructions which may be desirable for specific
applications. The constructions shown provide for a finished stranded conductor approximately of the area indicated. When specified by the purchaser, the number or sizes
of wire may be increased to provide additional area to compensate for draw-down during subsequent processing.
TABLE 3 Maximum Length of Lay for Bunch-Stranded
Conductors
Maximum Length of Lay
Area of
Size, Nominal Column Column
Cross Section
AWG Diameter A B
cmil mm in. mm in. mm in. mm
20 820 10.5 7 0.167 4.24 3.00 76.20 3.00 76.20
16 510 8.37 8 0.149 3.78 2.75 69.85 2.75 69.85
13 090 6.63 9 0.133 3.38 2.50 63.50 2.50 63.50
10 380 5.26 10 0.118 3.00 2.50 63.50 2.50 63.50
6 530 3.31 12 0.093 2.36 2.00 50.80 2.00 50.80
4 110 2.08 14 0.074 1.88 2.00 50.80 1.75 44.45
2 580 1.31 16 0.059 1.50 2.00 50.80 1.50 38.10
1 620 0.821 18 0.047 1.19 2.00 50.80 1.25 31.75
1 020 0.517 20 0.037 0.94 2.00 50.80 1.00 25.40
640 0.324 22 0.030 0.76 1.30 33.02 0.80 20.32
404 0.205 24 0.024 0.61 1.20 30.48 0.70 17.78
253 0.128 26 0.019 0.48 1.00 25.40 0.60 15.24
159 0.0806 28 0.015 0.38 1.00 25.40 0.50 12.70
5. Joints
5.1 Necessary joints in wires shall be made in accordance with accepted commercial practice.
5.2 Joints shall be so constructed and so disposed throughout the conductor that the diameter or configuration of the completed
conductor is not substantially affected, and so that the flexibility of the completed conductor is not adversely affected.
6. Lay
6.1 Conductors of the same size and description furnished on one order shall have the same lay.
6.2 The direction of lay shal
...
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