ASTM B779-12 1.6.2012 | technical standard

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Additional information

1. 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.

ACSR/TW Conductor
Size

Size and Stranding of ACSR with Equal Area

Number of Aluminum Wires

Number of Layers

Steel Core Stranding

Mass per Unit Length,^A
lb/1000 ft

Rated
Strength,
1000 lb^B

Nominal
Outside
Diameter, in.

kcmil

Type

kcmil

Stranding

Number of Wires

Diameter,
in.

336.4

18/1

0.1367

365

8.6

0.63

477.0

24/7

0.0940

613

17.2

0.78

477.0

26/7

0.1053

655

19.4

0.79

556.5

24/7

0.1015

715

20.0

0.84

556.5

26/7

0.1138

765

22.6

0.85

636.0

36/1

0.1329

646

13.5

0.85

636.0

24/7

0.1085

816

22.9

0.89

636.0

26/7

0.1216

874

25.4

0.91

795.0

45/7

0.0886

892

21.0

0.96

795.0

22/7

0.1108

975

25.9

0.98

795.0

54/7

0.1213

1021

28.2

0.99

795.0

26/7

0.1360

1092

31.8

1.01

954.0

42/7

0.0837

1029

23.7

1.05

954.0

45/7

0.0971

1075

25.9

1.06

954.0

54/7

0.1329

1226

33.5

1.08

1033.5

42/7

0.0871

1115

25.7

1.09

1033.5

45/7

0.1010

1165

28.1

1.10

1033.5

54/7

0.1363

1327

36.3

1.13

1113.0

42/7

0.0904

1201

27.5

1.13

1113.0

45/7

0.1049

1254

30.3

1.14

1113.0

54/19

0.0862

1429

39.1

1.19

1192.5

42/7

0.0936

1286

29.5

1.17

1192.5

45/7

0.1085

1343

32.4

1.18

1192.5

54/19

0.0892

1530

41.9

1.22

1272.0

42/7

0.0967

1372

31.4

1.20

1272.0

45/7

0.1121

1433

34.6

1.22

1272.0

54/19

0.0921

1632

44.1

1.26

1351.5

45/7

0.1155

1522

36.7

1.26

1351.5

54/19

0.0949

1734

46.8

1.30

1431.0

45/7

0.1189

1613

38.9

1.29

1431.0

54/19

0.0977

1836

49.6

1.34

1590.0

45/7

0.1253

1792

42.2

1.36

1590.0

54/19

0.1030

2040

55.1

1.41

1780.0

84/19

0.0874

2063

50.7

1.45

2156.0

84/19

0.0961

2515

61.1

1.61

Code Word^A

ACSR/TW Conductor
Size

Size and Stranding of ACSR with Equal Diameter

Number of Aluminum Wires

Number of Layers

Steel Core Stranding

Mass
per Unit
Length,^B
lb/1000 ft

Rated Strength,
1000 lb^C

Nominal Outside Diameter, in.^D

kcmil^E

Type

kcmil^E

Stranding

Number of Wires

Diameter,
in.^D

Monongahela/TW

405.1

336.4

18/1

0.1520

441

10.2

0.68

Mohawk/TW

571.7

477.0

24/7

0.1030

735

20.6

0.85

Calumet/TW

565.3

477.0

26/7

0.1146

776

22.9

0.86

Mystic/TW

666.6

556.5

24/7

0.1111

856

24.0

0.91

Oswego/TW

664.8

556.5

26/7

0.1244

913

26.6

0.93

Maumee/TW

768.2

636.0

24/7

0.1195

988

27.7

0.98

Wabash/TW

762.8

636.0

26/7

0.1331

1047

30.5

0.99

Nechako/TW

768.9

636.0

36/1

0.1520

785

16.4

0.93

Kettle/TW

957.2

795.0

45/7

0.0973

1079

26.0

1.06

Fraser/TW

946.7

795.0

22/7

0.1154

1142

29.6

1.08

Columbia/TW

966.2

795.0

54/7

0.1338

1241

34.0

1.09

Suwannee/TW

959.6

795.0

26/7

0.1493

1318

37.0

1.11

Cheyenne/TW

1168.1

954.0

42/7

0.0926

1260

28.9

1.16

Genesee/TW

1158.0

954.0

45/7

0.1078

1308

31.6

1.17

Hudson/TW

1158.4

954.0

54/7

0.1467

1489

39.6

1.20

Catawba/TW

1272.0

1033.5

42/7

0.0967

1372

31.4

1.20

Nelson/TW

1257.1

1033.5

45/7

0.1115

1417

34.2

1.21

Yukon/TW

1233.6

1033.5

54/7

0.0910

1586

42.9

1.25

Truckee/TW

1372.5

1113.0

42/7

0.1004

1481

33.4

1.25

Mackenzie/TW

1359.7

1113.0

45/7

0.1159

1530

36.9

1.26

Thames/TW

1334.6

1113.0

54/19

0.0944

1713

46.3

1.29

St. Croix/TW

1467.8

1192.5

42/7

0.1041

1585

35.8

1.29

Miramichi/TW

1455.3

1192.5

45/7

0.1200

1640

39.2

1.30

Merrimack/TW

1433.6

1192.5

54/19

0.0978

1840

49.7

1.34

Platte/TW

1569.0

1272.0

42/7

0.1074

1693

38.2

1.33

Potomac/TW

1557.4

1272.0

45/7

0.1241

1755

41.9

1.35

Rio Grande/TW

1533.3

1272.0

54/19

0.1012

1968

53.2

1.38

Schuylkill/TW

1657.4

1351.5

45/7

0.1280

1868

44.0

1.39

Pecos/TW

1622.0

1351.5

54/19

0.1064

2107

57.5

1.42

Pee Dee/TW

1758.6

1431.0

45/7

0.1319

1982

46.7

1.43

James/TW

1730.6

1431.0

54/19

0.1075

2221

59.4

1.47

Athabaska/TW

1949.6

1590.0

45/7

0.1392

2199

51.9

1.50

Cumberland/TW

1926.9

1590.0

54/19

0.1133

2471

65.3

1.55

Powder/TW

2153.8

1780.0

84/19

0.0961

2498

61.1

1.60

Santee/TW

2627.3

2156.0

84/19

0.1062

3048

74.5

1.76

ACSR/TW Conductor Size

Number of Aluminum Wires

Number
of Layers

Steel Core Stranding

Mass per Unit Length, lb/1000 ft

Rated Strength, 1000 lb

Nominal Outside Diameter, in.

kcmil

Number of Wires

Diameter, in.

795.5

0.0866

886.0

21.2

0.95

1109.7

0.0700

1132.0

23.6

1.10

1524.1

0.0966

1617.0

35.8

1.30

1935.4

0.0866

1958.0

41.0

1.45

B230/B230M-22

Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes

B803-08

Standard Specification for High-Strength Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

B606-08

Standard Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforced

B549-22

Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced for Use in Overhead Electrical Conductors

ANSI H35.1

American National Standard Alloy and Temper Designation Systems for Aluminum Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

B232/B232M-24

Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)

B502-10

Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors

NBS Handbook 100

-- Copper Wire Tables of the National Bureau of Standards Available from National Technical Information Service (NTIS), 5285 Port Royal Rd., Springfield, VA 22161, http://www.ntis.gov.

B263-04

Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors

B354-23

Standard Terminology Relating to Uninsulated Metallic Electrical Conductors

B498/B498M-22

Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors

B500/B500M-24

Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors

B802/B802M-23

Standard Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

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ASTM B779-12

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Annotation of standard text ASTM B779-12 :

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