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Benefits of reading newspapers proveUIUC Physics 436 EM Fields Sources II Fall Semester, 2011 Supplemental HandoutProf. Steven ErredeAmeri chiffonier Wire approximate (AWG) metrical pot Wire SizesAWG Wire Sizes (see table below)AWG In the American Wire Gauge (AWG), diameters can be calculated by applying the formula D(AWG) = 0.005 * 92 ((36-AWG)/39) inch. For the 00, 000, 0000 etc. gauges you use -1, -2, -3, which makes more sense mathematically than double nought. This means that in American Wire Gauge every 6 gauge settle gives a doubling of the wire diameter, and every 3 gauge decrease doubles the wire cross(a) sectional area just like calculating dBs in signal levels. Metric Wire Gauges (see table below)Metric Gauge In the Metric Gauge scale, the gauge is 10 time the diameter in millimeters, thus a 50 gauge metric wire would be 5 mm in diameter. Note that in AWG the diameter goes up as the gauge goes down. Metric is the opposite. belike because of this confusion, most of the time metric sized wire is specified in millimeters rather than metric gauges. preventative Carrying Capacities (see table below)The adjacent chart is a guideline of ampacity, or copper wire current-carrying capacity following the Handbook of Electronic Tables and Formulas for American Wire Gauge. As you might guess, the rated ampacities are just a discover of thumb. In careful engineering the insulation temperature limit, thickness, thermal conductivity, and air convection and temperature should all be taken into account. The maximum Amps for Power Transmission uses the 700 circular mils per amp rule, which is very conservative. The guckimum Amps for Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle. For short lengths of wire, such as is used in battery packs, you should trade off the resistance and load with size, weight, and flexibility. professor Steven Errede, incision of Physics, University of Illinois atUrbana- Champaign, Illinois 2005-2008. All Rights Reserved.1UIUC Physics 436 EM Fields Sources II Fall Semester, 2011 Supplemental HandoutProf. Steven ErredeAWG GaugeDiameter(Inches)Diameter(mm)Ohms per 1000( T=20oC)Ohms per km( T=20oC)Max amps forchassis wiringMax amps forpower X-mission00000000001234567891011121314151617181920212223242526272829303132Metric 2.033Metric 1.834Metric 1.635Metric 1.436Metric 1.2537Metric 1.1238Metric 13940414243444546470.46000.40960.36480.32490.28930.25760.22940.20430.18190.16200.14430.12850.11440.10190.09070.08080.07200.06410.05710.05080.04530.04030.03590.03200.02850.02540.02260.02010.01790.01590.01420.01260.01130.01000.00890.00800.007870.007100.007090.006300.006300.005600.005510.005000.004920.004500.004410.004000.003940.003500.003100.002800.002500.002200.002000.001760.001570.0014011.684010.403849.265928.252467.348226.543045.826765.189224.620264.114803.665223.263902.905762.588262.303782.052321.828801.628141.450341.290321.150621.023620.911860.812800.723900.64 5160.574040.510540.454660.403860.360680.320040.287020.2540.226060.20320.2000.180340.180000.160020.160020.142240.140000.127000.125000.114300.112000.101600.100000.088900.078740.071120.063500.055880.050800.044700.039880.035560.04900.06180.07790.09830.12390.15630.19700.24850.31330.39510.49820.62820.79210.99891.26001.58802.00302.52503.18404.01605.06406.38508.051010.15012.80016.14020.3625.6732.3740.8151.4764.981.83103.2130.1164.1169.4206.9207.5260.9260.9329.0339.0414.8428.2523.1533.8659.6670.2831.8104913231659214325933348420752910.1607200.2027040.2555120.3224240.4063920.5126640.6461600.8150801.0276241.2959281.6340962.0604962.5980883.2763924.1328005.2086406.5698408.28200010.4435213.1724816.6099220.9428026.4072833.2920041.9840052.9392066.7808084.19760106.1736133.8568168.8216212.8720268.4024338.4960426.7280538.2480555.6100678.6320680.5500855.7520855.75201079.12011141360140417151750216321982728344243415443703185071098413802173593803282832452111811581351181018973645547413532282219161411974.73. 52.72.21.71.41.20.860.7000.5300.5100.4300.4300.3300.3300.2700.2600.2100.2000.1700.1630.1300.1260.1100.090302239190150119947560473730241915129.37.45.94.73.72.92.31.81.51.20.920.7290.5770.4570.3610.2880.2260.1820.1420.11300.09100.08800.07200.07200.05600.05600.04400.04300.03500.03400.02890.02770.02280.02250.01750.01372 Professor Steven Errede, Department of Physics, University of Illinois at Urbana-Champaign, Illinois 2005-2008. All Rights Reserved.UIUC Physics 436 EM Fields Sources II Fall Semester, 2011 Supplemental HandoutProf. Steven Errede Professor Steven Errede, Department of Physics, University of Illinois at Urbana-Champaign, Illinois 2005-2008. All Rights Reserved.3