ASTM F1883-03(2008)
(Practice)Standard Practice for Selection of Wire and Cable Size in AWG or Metric Units
Standard Practice for Selection of Wire and Cable Size in AWG or Metric Units
SIGNIFICANCE AND USE
The selection criteria is to be applied for uses of (1) new cable and (2) replacement cable.
For the selection of new cable or the selection of replacement cable, this practice defines the choice criteria for conductor selection for cables in AWG (ASTM) or metric (IEC) sizes.
SCOPE
1.1 This practice is intended as a guide to shipbuilders, shipowners, and design agents for use in the selection of conductor size for single conductor or multiple conductor cable sizes either in American Wire Gauge (AWG) or metric designations for commercial ship design and construction.
1.2 The comparison chart of electrical conductor sizes shown in Table 1 presents a combined listing of international standard sizes of Class 2 stranded copper conductors in accordance with AWG (Specification B 8) English units or IEC (IEC 60228) metric units.
1.3 As a precautionary caveat, some conductor sizes listed in Table 1 may exceed minimal size requirements of the U.S. Coast Guard, the American Bureau of Shipping, and IEEE STD 45 for specific applications.
1.4 The values stated for ampacity and dc resistance are presented as maximum values and are provided for information only.
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Designation: F1883 − 03(Reapproved 2008) An American National Standard
Standard Practice for
1
Selection of Wire and Cable Size in AWG or Metric Units
This standard is issued under the fixed designation F1883; 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.
4
1. Scope 2.3 IEEE Standard:
IEEE STD 45 Recommended Practice for Electric Installa-
1.1 This practice is intended as a guide to shipbuilders,
tions on Shipboard
shipowners, and design agents for use in the selection of
conductorsizeforsingleconductorormultipleconductorcable
3. Significance and Use
sizes either in American Wire Gauge (AWG) or metric desig-
3.1 The selection criteria is to be applied for uses of (1) new
nations for commercial ship design and construction.
cable and (2) replacement cable.
1.2 The comparison chart of electrical conductor sizes
3.2 For the selection of new cable or the selection of
shown in Table 1 presents a combined listing of international
replacement cable, this practice defines the choice criteria for
standard sizes of Class 2 stranded copper conductors in
conductor selection for cables in AWG (ASTM) or metric
accordance withAWG (Specification B8) English units or IEC
(IEC) sizes.
(IEC 60228) metric units.
1.3 As a precautionary caveat, some conductor sizes listed
4. Selection Criteria
in Table 1 may exceed minimal size requirements of the U.S.
4.1 When selecting cable for any application, AWG or
CoastGuard,theAmericanBureauofShipping,andIEEESTD
metric sizing should be selected according to preferred sizes.
45 for specific applications.
The sizes of conductors that have been marked with an asterisk
1.4 The values stated for ampacity and dc resistance are
in Table 1 designate preferred sizes per Specification B8 and
presentedasmaximumvaluesandareprovidedforinformation
IEC 60228. Those sizes not marked are given for reference,
only.
and it is recommended that their use be discouraged.
4.2 When selecting cable for any application, AWG or
2. Referenced Documents
metric sizing should be selected with full consideration of the
2
2.1 ASTM Standards:
relationshipoftypeofinsulationandampacity.Directselection
B8 Specification for Concentric-Lay-Stranded Copper
between AWG and metric sizes can be made only after a
Conductors, Hard, Medium-Hard, or Soft
determination of the equivalence of insulation is made.
B193 Test Method for Resistivity of Electrical Conductor
4.3 When selecting cable, the conductor size will be deter-
Materials
mined from analysis of required ampacity, voltage drop
3
2.2 IEC Standards:
considerations, type of cable insulation, and planned installa-
IEC 60092-350 Electrical Installations in Ships—Part 350:
tion. Recommended practices for selection and installation of
Shipboard Power: Cables—General Construction andTest
cable systems are detailed in IEEE STD 45 and IEC 60092-
Requirements
350.
IEC 60228 Conductors of Insulated Cables
4.4 For the selection of cable sizes for new applications,
conductor size that satisfies ampacity requirements, voltage
drop factors, and the adequacy for application in the available
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships
cable space must also be considered.
and Marine Technologyand is the direct responsibility of Subcommittee F25.10 on
Electrical.
4.5 For the selection of cable sizes for replacement
CurrenteditionapprovedMay1,2008.PublishedJuly2008.Originallyapproved
applications, cable size should be selected in excess of or equal
in 1998. Last previous edition approved in 2003 as F1883 – 03. DOI: 10.1520/
F1883-03R08.
to the replaced cable size. Existing cable space limitations
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
should then be determined to ensure that space for installation
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of the replacement cable is adequate.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from International Electrotechnical Commission (IEC), 3 rue de
4
Varembé, Case postale 131, CH-1211, Geneva 20, Switzerland, http://www.iec.ch. Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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F1883 − 03 (2008)
TABLE 1 Conversion Table—AWG/Metric Preferred Sizes of
α = known or given temperature coefficient of resistance of the conduc
...
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.
An American National Standard
Designation:F1883–98 Designation:F1883–03 (Reapproved 2008)
Standard Practice for
1
Selection of Wire and Cable Size in AWG or Metric Units
This standard is issued under the fixed designation F 1883; 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
1.1 This practice is intended as a guide to shipbuilders, shipowners, and design agents for use in the selection of conductor size
for single conductor or multiple conductor cable sizes either in American Wire Gauge (AWG) or metric designations for
commercial ship design and construction.
1.2 The comparison chart of electrical conductor sizes shown in Table 1 presents a combined listing of international standard
sizes of annealed Class 2 stranded copper conductors in accordance with AWG (Specification B 8) English units or IEC (IEC
60228) metric units.
1.3 As a precautionary caveat, some conductor sizes listed in Table 1 may exceed minimal size requirements of the U.S. Coast
Guard, the American Bureau of Shipping, and IEEE STD 45 for specific applications.
1.4The values stated for ampacity and dc resistance are presented as typical values and are provided for information only.
TABLE 1Conversion Table—AWG/Metric Preferred Sizes of Conductors
B
dc Resistances at 20°C
Size Area in
Size AWG/
A
Metric, Circ Mils Ampacity
Ohms per
MCM
2 Ohms per km
mm (Nominal)
1000 ft
C
2000* 2000000 1155 0.0053 0.0174
1000* 1970000 1145 0.0054 0.0176
1750* 1750000 1070 0.0063 0.0199
800* 1580000 1009 0.0067 0.0218
1500* 1500000 980 0.0071 0.0232
1250* 1250000 890 0.0085 0.0278
630* 1240000 886 0.0096 0.0280
1000* 1000000 780 0.0106 0.0347
500* 987000 772 0.0105 0.0347
400* 789000 675 0.0133 0.0438
750* 750000 655 0.0141 0.0463
600* 600000 575 0.0176 0.0578
300* 592000 570 0.0211 0.0580
500* 500000 515 0.0211 0.0694
240* 474000 499 0.0219 0.0720
400* 400000 455 0.0264 0.0867
185* 365000 431 0.0286 0.0938
350* 350000 420 0.0302 0.0990
300* 300000 375 0.0353 0.1157
150* 296000 372 0.0353 0.1157
250* 250000 340 0.0423 0.1388
120* 237000 327 0.0436 0.1492
4/0* 211600 300 0.0500 0.1639
95* 187000 265 0.0551 0.1808
3/0* 167000 260 0.0631 0.2065
70* 138000 230 0.0752 0.2467
2/0* 133100 225 0.0794 0.2605
1/0* 105600 195 0.1002 0.3288
50* 98000 185 0.1044 0.3424
1 83690 165 0.1261 0.4139
35* 69100 144 0.1495 0.4904
1
This specification is under the jurisdiction of ASTM Committee F-25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
Electrical.
Current edition approved May 10, 1998. Published October 1998.
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
Electrical.
Current edition approved May 1, 2008. Published July 2008. Originally approved in 1998. Last previous edition approved in 2003 as F 1883 – 03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
F1883–03 (2008)
TABLE 1 Continued
B
dc Resistances at 20°C
Size Area in
Size AWG/
A
Metric, Circ Mils Ampacity
Ohms per
MCM
2
Ohms per km
mm (Nominal)
1000 ft
2* 66360 140 0.1588 0.5211
3 52620 120 0.2005 0.6577
25* 49300 115 0.2057 0.6748
4* 41740 105 0.2528 0.8295
16* 31600 89 0.3259 1.069
6* 26240 80 0.4023 1.320
10* 19700 63 0.5167 1.695
8* 16510 55 0.6380 2.093
6.0* 11800 43 0.8543 2.803
10* 10380 40 1.017 3.335
4.0* 7890 30 1.304 4.277
12* 6530 25 1.620 5.315
2.5* 4930 22 2.067 6.782
14* 4110 20 2.573 8.442
1.5* 2960 . 3.417 11.21
16* 2580 . 4.020 13.19
1.0* 1970 . 5.213 17.11
0.90 1773 . 6.45 21.10
18* 1620 . 6.82 20.95
0.80 1576 . 6.52 21.40
0.75* 1480 . 6.82 22.37
0.60* 1182 . 9.5 31.16
20* 1020 . 10.5 34.45
0.50* 987 . 11.4 37.40
22* 640 . 16.9 55.44
0.20* 24* 404 . 26.7 87.60
26* 253 . 43.6 143.04
A
Ampacity of single-conductor cable in air at ambient temperature of 30°C and maximum conductor temperature not exceeding 60°C.
B
Temperature correction: the conductor resistance may be corrected for moderate temperature differences from the noted reference temperature by the following
equation. The parameter, a T, varies with conductivity and temperature. For a list of common temperature coefficients see Test Methods B193.
...
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