ANSI ASTM F1883-2003 Standard Practice for Selection of Wire and Cable Size in AWG or Metric Units《用美国线规(AWG)或米制单位选择电线和电缆规格的实施规程》.pdf

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1、Designation: F1883 03 (Reapproved 2013) An American National StandardStandard Practice forSelection of Wire and Cable Size in AWG or Metric Units1This standard is issued under the fixed designation F1883; the number immediately following the designation indicates the year oforiginal adoption or, in

2、the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is intended as a guide to shipbuilders,shipowners, and design agents f

3、or use in the selection ofconductor size for single conductor or multiple conductor cablesizes either in American Wire Gauge (AWG) or metric desig-nations for commercial ship design and construction.1.2 The comparison chart of electrical conductor sizesshown in Table 1 presents a combined listing of

4、 internationalstandard sizes of Class 2 stranded copper conductors inaccordance with AWG (Specification B8) English units or IEC(IEC 60228) metric units.1.3 As a precautionary caveat, some conductor sizes listedin Table 1 may exceed minimal size requirements of the U.S.Coast Guard, theAmerican Burea

5、u of Shipping, and IEEE STD45 for specific applications.1.4 The values stated for ampacity and dc resistance arepresented as maximum values and are provided for informationonly.2. Referenced Documents2.1 ASTM Standards:2B8 Specification for Concentric-Lay-Stranded CopperConductors, Hard, Medium-Hard

6、, or SoftB193 Test Method for Resistivity of Electrical ConductorMaterials2.2 IEC Standards:3IEC 60092-350 Electrical Installations in ShipsPart 350:Shipboard Power: CablesGeneral Construction and TestRequirementsIEC 60228 Conductors of Insulated Cables2.3 IEEE Standard:4IEEE STD 45 Recommended Prac

7、tice for Electric Installa-tions on Shipboard3. Significance and Use3.1 The selection criteria is to be applied for uses of (1) newcable and (2) replacement cable.3.2 For the selection of new cable or the selection ofreplacement cable, this practice defines the choice criteria forconductor selection

8、 for cables in AWG (ASTM) or metric(IEC) sizes.4. Selection Criteria4.1 When selecting cable for any application, AWG ormetric sizing should be selected according to preferred sizes.The sizes of conductors that have been marked with an asteriskin Table 1 designate preferred sizes per Specification B

9、8 andIEC 60228. Those sizes not marked are given for reference,and it is recommended that their use be discouraged.4.2 When selecting cable for any application, AWG ormetric sizing should be selected with full consideration of therelationship of type of insulation and ampacity. Direct selectionbetwe

10、en AWG and metric sizes can be made only after adetermination of the equivalence of insulation is made.4.3 When selecting cable, the conductor size will be deter-mined from analysis of required ampacity, voltage dropconsiderations, type of cable insulation, and planned installa-tion. Recommended pra

11、ctices for selection and installation ofcable systems are detailed in IEEE STD 45 and IEC 60092-350.4.4 For the selection of cable sizes for new applications,conductor size that satisfies ampacity requirements, voltagedrop factors, and the adequacy for application in the availablecable space must al

12、so be considered.4.5 For the selection of cable sizes for replacementapplications, cable size should be selected in excess of or equalto the replaced cable size. Existing cable space limitationsshould then be determined to ensure that space for installationof the replacement cable is adequate.1This

13、specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technologyand is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved May 1, 2013. Published May 2013. Originallyapproved in 1998. Last previous edition approved in 2008 as F1883 03 (20

14、08).DOI: 10.1520/F1883-03R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International El

15、ectrotechnical Commission (IEC), 3 rue deVaremb, Case postale 131, CH-1211, Geneva 20, Switzerland, http:/www.iec.ch.4Available 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,

16、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Keywords5.1 AWG conductor sizes; cable selection; conductor com-parison; metric conductor sizesTABLE 1 Conversion TableAWG/Metric Preferred Sizes ofConductorsSizeMetric,mm2SizeAWG/MCMArea inCirc Mils(Nominal)Ampa

17、cityAdc Resistances at 20CBOhmsper 1000 ftOhmsper km2000*C2 000 000 1155 0.0053 0.01771000* 1 970 000 1145 0.0054 0.01761750* 1 750 000 1070 0.0063 0.0199800* 1 580 000 1009 0.0067 0.02241500* 1 500 000 980 0.0071 0.02321250* 1 250 000 890 0.0085 0.0278630* 1 240 000 886 0.0096 0.02861000* 1 000 000

18、 780 0.0106 0.0347500* 987 000 772 0.0105 0.0369400* 789 000 675 0.0133 0.0475750* 750 000 655 0.0141 0.0463600* 600 000 575 0.0176 0.0578300* 592 000 570 0.0211 0.0607500* 500 000 515 0.0211 0.0694240* 474 000 499 0.0219 0.0762400* 400 000 455 0.0264 0.0867185* 365 000 431 0.0286 0.1000350* 350 000

19、 420 0.0302 0.0990300* 300 000 375 0.0353 0.1157150* 296 000 372 0.0353 0.1260250* 250 000 340 0.0423 0.1388120* 237 000 327 0.0436 0.15404/0* 211 600 300 0.0500 0.163995* 187 000 265 0.0551 0.19503/0* 167 000 260 0.0631 0.206570* 138 000 230 0.0752 0.27002/0* 133 100 225 0.0794 0.26051/0* 105 600 1

20、95 0.1002 0.328850* 98 700 185 0.1044 0.39101 83 690 165 0.1261 0.413935* 69 100 144 0.1495 0.52902* 66 360 140 0.1588 0.52113 52 620 120 0.2005 0.657725* 49 300 115 0.2057 0.73404* 41 740 105 0.2528 0.829516* 31 600 89 0.3259 1.1606* 26 240 80 0.4023 1.32010* 19 700 63 0.5167 1.8408* 16 510 55 0.63

21、80 2.0936.0* 11 800 43 0.8543 3.11010* 10 380 40 1.017 3.3354.0* 7 890 30 1.304 4.70012* 6 530 25 1.620 5.3152.5* 4 930 22 2.067 7.56014* 4 110 20 2.573 8.4421.5* 2 960 . . . 3.417 12.2016* 2 580 . . . 4.020 13.191.0* 1 970 . . . 5.213 18.200.90 1 773 . . . 6.45 21.1018* 1 620 . . . 6.82 20.950.80 1

22、 576 . . . 6.52 21.400.75* 1 480 . . . 6.82 24.800.60* 1 182 . . . 9.5 31.1620* 1 020 . . . 10.5 34.450.50* 987 . . . 11.4 36.7022* 640 . . . 16.9 55.440.20* 24* 404 . . . 26.7 87.6026* 253 . . . 43.6 143.04AAmpacity of single-conductor cable in air at ambient temperature of 30C andmaximum conductor

23、 temperature not exceeding 60C.BTemperature correction: the conductor resistance may be corrected for moderatetemperature differences from the noted reference temperature by the followingequation. The parameter, T, varies with conductivity and temperature. For a list ofcommon temperature coefficient

24、s see Test Methods B193.RT5 Rtf 11Tst 2 Td g (1)where:RT= resistance at reference temperature T,Rt= resistance as measured at temperature t,T= known or given temperature coefficient of resistance of the conductor beingmeasured at reference temperature T. At 20C, the value is 0.003 93,T = reference t

25、emperature, andt = temperature at which measurement is made.CAn asterisk (*) indicates preferred sizes for wires ofAmerican Wire Gauge or perIEC 60228 (metric) as appropriate.F1883 03 (2013)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with

26、 any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible techni

27、cal committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideratio

28、n at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harb

29、or Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F1883 03 (2013)3