ASTM F1883-2003(2008) Standard Practice for Selection of Wire and Cable Size in AWG or Metric Units《美国线规或米制单位导线和电缆规格选择的标准实施规程》.pdf

1、Designation: F 1883 03 (Reapproved 2008)An American National StandardStandard Practice forSelection of Wire and Cable Size in AWG or Metric Units1This standard is issued under the fixed designation F 1883; 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

3、for 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 o

4、f internationalstandard sizes of Class 2 stranded copper conductors inaccordance withAWG (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 SoftB 193 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:41This specification is unde

7、r the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved May 1, 2008. Published July 2008. Originally approvedin 1998. Last previous edition approved in 2003 as F 1883 03.2For referenced ASTM

8、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 Electrotechnical Commission (IEC), 3 rue deVaremb, C

9、ase 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.TABLE 1 Conversion TableAWG/Metric Preferred Sizes ofConductorsSizeMetric,mm2Si

10、zeAWG/MCMArea inCirc Mils(Nominal)AmpacityAdc 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 24

11、0 000 886 0.0096 0.02861000* 1 000 000 780 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*

12、 365 000 431 0.0286 0.1000350* 350 000 420 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* 1

13、33 100 225 0.0794 0.26051/0* 105 600 195 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* 1

14、9 700 63 0.5167 1.8408* 16 510 55 0.6380 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

15、 21.1018* 1 620 . . . 6.82 20.950.80 1 576 . . . 6.52 21.400.75* 1 480 . . . 6.82 24.801Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.IEEE STD 45 Recommended Practice for Electric Installa-tions on Shipboard3. Significance and Use3.

16、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 for cables in AWG (ASTM) or metric(IEC) sizes.4. Selection Criteria4.

17、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 B8andIEC 60228. Those sizes not marked are given for reference,and it i

18、s 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 selectionbetween AWG and metric sizes can be made only after adetermination of the eq

19、uivalence of insulation is made.4.3 When selecting cable, the conductor size will be deter-mined from analysis of required ampacity, voltage drop con-siderations, type of cable insulation, and planned installation.Recommended practices for selection and installation of cablesystems are detailed in I

20、EEE 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 also be considered.4.5 For the selection of cable sizes for replacement a

21、ppli-cations, cable size should be selected in excess of or equal tothe replaced cable size. Existing cable space limitations shouldthen be determined to ensure that space for installation of thereplacement cable is adequate.5. Keywords5.1 AWG conductor sizes; cable selection; conductor com-parison;

22、 metric conductor sizesASTM International takes no position respecting the validity of any patent rights asserted in connection with 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 infringem

23、ent of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical 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

24、 for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration 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 kn

25、own to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor 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 AS

26、TM 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).TABLE 1 ContinuedSizeMetric,mm2SizeAWG/MCMArea inCirc Mils(Nominal)AmpacityAdc Resistances at 20CBOhmsper 1000 ftOhmsper km0.60* 1 182 . . . 9.5 31.1620* 1 02

27、0 . . . 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 temperature not exceeding 60C.BTemperature correction: the conductor resistance may

28、 be corrected formoderate temperature differences from the noted reference temperature by thefollowing equation. The parameter, aT, varies with conductivity and temperature.For a list of common temperature coefficients see Test Methods B 193.RT5 Rt11aTt 2 T! (1)where:RT= resistance at reference temp

29、erature T,Rt= resistance as measured at temperature t,aT= known or given temperature coefficient of resistance of the conductorbeing measured at reference temperature T. At 20C, the value is0.003 93,T = reference temperature, andt = temperature at which measurement is made.CAn asterisk (*) indicates preferred sizes for wires of American Wire Gauge orper IEC 60228 (metric) as appropriate.F 1883 03 (2008)2