==== Diameters of round enamelled wire according to IEC-60317-0-1 ====
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| {{/wiki/logo.png?20&nolink}} //See also the main article: [[/Enamelled wire]].// |
The international standard IEC-60317-0-1 defines the preferred diameters of round [[/enamelled wire]] as following the R20 series (20 sizes per decade).[(IEC60317_0_1>[[https://webstore.iec.ch/publication/65656|IEC 60317-0-1:2013+AMD1:2019 CSV, Consolidated version, Specifications for particular types of winding wires - Part 0-1: General requirements - Enamelled round copper wire]], {accessed 2021-11-27})] If intermediate values are required for technical reasons then they should follow the R40 series.
//"Increase"// denotes the difference between the outer and inner diameters.[(DASOL>[[http://www.dahrengroup.com/wp-content/uploads/2017/06/DASOL-180-solderable.pdf|DASOL, Round enamelled winding wire of copper, solderable, class 180, Product information]], {accessed 2021-11-27})]
Resistivity values are based on the nominal conductor diameter, with the nominal resistivity assumed as:[(IEC60317_0_1)] \\ (1/58.5) Ω·mm2·m-1 = 1.7094 × 10-8 Ωm.
[[/American Wire Gauge]] (AWG) sizes[(AWG>[[https://www.astm.org/b0258-02.html|ASTM B 258-02, Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors]], {accessed 2021-11-27})] are included for comparison and reference.
=== Ordinary enamelled wire ===
For wires below 0.08 mm the resistance can vary up to around ±10%, for wires up 0.28 mm the variation reduces gradually to ±4%, and for thicker wires it is around ±3%.
These variation in resistance arise from the combined allowed tolerances on resistivity and conductor diameter.
^ Nominal \\ conductor \\ diameter \\ (mm) ^ Conductor \\ tolerance \\ +/- \\ (mm) ^ Min. increase \\ due to the insulation \\ (mm) ^^^ Max. outer diameter \\ (mm) ^^^ Nominal \\ resistance \\ at 20 °C \\ (Ω/m) ^ Nearest \\ AWG \\ size ^
^ ::: ^ ::: ^ Grade 1 ^ Grade 2 ^ Grade 3 ^ Grade 1 ^ Grade 2 ^ Grade 3 ^ ::: ^ ::: ^
| 0.018 | | 0.002 | 0.004 | 0.006 | 0.022 | 0.024 | 0.026 | 67.18 | 53 AWG |
| 0.020 | | 0.002 | 0.004 | 0.007 | 0.024 | 0.027 | 0.030 | 54.41 | 52 AWG |
| 0.022 | | 0.002 | 0.005 | 0.008 | 0.027 | 0.030 | 0.033 | 44.97 | 51 AWG |
| 0.025 | | 0.003 | 0.005 | 0.008 | 0.031 | 0.034 | 0.037 | 34.82 | 50 AWG |
| 0.028 | | 0.003 | 0.006 | 0.009 | 0.034 | 0.038 | 0.042 | 27.76 | 49 AWG |
| | | | | | | | | | |
| 0.032 | | 0.003 | 0.007 | 0.010 | 0.039 | 0.043 | 0.047 | 21.25 | 48 AWG |
| 0.036 | | 0.004 | 0.008 | 0.011 | 0.044 | 0.049 | 0.053 | 16.79 | 47 AWG |
| 0.040 | | 0.004 | 0.008 | 0.012 | 0.049 | 0.054 | 0.058 | 13.60 | 46 AWG |
| 0.045 | | 0.005 | 0.009 | 0.013 | 0.055 | 0.061 | 0.066 | 10.75 | 45 AWG |
| 0.050 | | 0.005 | 0.010 | 0.014 | 0.060 | 0.066 | 0.072 | 8.706 | 44 AWG |
| | | | | | | | | | |
| 0.056 | | 0.006 | 0.011 | 0.015 | 0.067 | 0.074 | 0.081 | 6.940 | 43 AWG |
| 0.063 | | 0.006 | 0.012 | 0.017 | 0.076 | 0.083 | 0.090 | 5.484 | 42 AWG |
| 0.071 | 0.003 | 0.007 | 0.012 | 0.018 | 0.084 | 0.091 | 0.098 | 4.318 | 41 AWG |
| 0.080 | 0.003 | 0.007 | 0.014 | 0.020 | 0.094 | 0.101 | 0.108 | 3.401 | 40 AWG |
| 0.090 | 0.003 | 0.008 | 0.015 | 0.022 | 0.105 | 0.113 | 0.120 | 2.687 | 39 AWG |
| | | | | | | | | | |
| 0.100 | 0.003 | 0.008 | 0.016 | 0.023 | 0.117 | 0.125 | 0.132 | 2.176 | 38 AWG |
| 0.112 | 0.003 | 0.009 | 0.017 | 0.026 | 0.130 | 0.139 | 0.147 | 1.735 | 37 AWG |
| 0.125 | 0.003 | 0.010 | 0.019 | 0.028 | 0.144 | 0.154 | 0.163 | 1.393 | 36 AWG |
| 0.140 | 0.003 | 0.011 | 0.021 | 0.030 | 0.160 | 0.171 | 0.181 | 1.110 | 35 AWG |
| 0.160 | 0.003 | 0.012 | 0.023 | 0.033 | 0.182 | 0.194 | 0.205 | 0.8502 | 34 AWG |
| | | | | | | | | | |
| 0.180 | 0.003 | 0.013 | 0.025 | 0.036 | 0.204 | 0.217 | 0.229 | 0.6718 | 33 AWG |
| 0.200 | 0.003 | 0.014 | 0.027 | 0.039 | 0.226 | 0.239 | 0.252 | 0.5441 | 32 AWG |
| 0.224 | 0.003 | 0.015 | 0.029 | 0.043 | 0.252 | 0.266 | 0.280 | 0.4338 | 31 AWG |
| 0.250 | 0.004 | 0.017 | 0.032 | 0.048 | 0.281 | 0.297 | 0.312 | 0.3482 | 30 AWG |
| 0.280 | 0.004 | 0.018 | 0.033 | 0.050 | 0.312 | 0.329 | 0.345 | 0.2776 | 29 AWG |
| | | | | | | | | | |
| 0.315 | 0.004 | 0.019 | 0.035 | 0.053 | 0.349 | 0.367 | 0.384 | 0.2193 | 28 AWG |
| 0.355 | 0.004 | 0.020 | 0.038 | 0.057 | 0.392 | 0.411 | 0.428 | 0.1727 | 27 AWG |
| 0.400 | 0.005 | 0.021 | 0.040 | 0.060 | 0.439 | 0.459 | 0.478 | 0.1360 | 26 AWG |
| 0.450 | 0.005 | 0.022 | 0.042 | 0.064 | 0.491 | 0.513 | 0.533 | 0.1075 | 25 AWG |
| 0.500 | 0.005 | 0.024 | 0.045 | 0.067 | 0.544 | 0.566 | 0.587 | 0.08706 | 24 AWG |
| | | | | | | | | | |
| 0.560 | 0.006 | 0.025 | 0.047 | 0.071 | 0.606 | 0.630 | 0.653 | 0.06940 | 23 AWG |
| 0.630 | 0.006 | 0.027 | 0.050 | 0.075 | 0.679 | 0.704 | 0.728 | 0.05484 | 22 AWG |
| 0.710 | 0.007 | 0.028 | 0.053 | 0.080 | 0.762 | 0.789 | 0.814 | 0.04318 | 21 AWG |
| 0.800 | 0.008 | 0.030 | 0.056 | 0.085 | 0.855 | 0.884 | 0.911 | 0.03401 | 20 AWG |
| 0.900 | 0.009 | 0.032 | 0.060 | 0.090 | 0.959 | 0.989 | 1.018 | 0.02687 | 19 AWG |
| | | | | | | | | | |
| 1.000 | 0.010 | 0.034 | 0.063 | 0.095 | 1.062 | 1.094 | 1.124 | 0.02176 | 18 AWG |
| 1.120 | 0.011 | 0.034 | 0.065 | 0.098 | 1.184 | 1.217 | 1.248 | 0.01735 | 17 AWG |
| 1.250 | 0.013 | 0.035 | 0.067 | 0.100 | 1.316 | 1.349 | 1.381 | 0.01393 | 16 AWG |
| 1.400 | 0.014 | 0.036 | 0.069 | 0.103 | 1.468 | 1.502 | 1.535 | 0.01110 | 15 AWG |
| 1.600 | 0.016 | 0.038 | 0.071 | 0.107 | 1.670 | 1.706 | 1.740 | 0.008502 | 14 AWG |
| | | | | | | | | | |
| 1.800 | 0.018 | 0.039 | 0.073 | 0.110 | 1.872 | 1.909 | 1.944 | 0.006718 | 13 AWG |
| 2.000 | 0.020 | 0.040 | 0.075 | 0.113 | 2.074 | 2.112 | 2.148 | 0.005441 | 12 AWG |
| 2.240 | 0.022 | 0.041 | 0.077 | 0.116 | 2.316 | 2.355 | 2.392 | 0.004338 | 11 AWG |
| 2.500 | 0.025 | 0.042 | 0.079 | 0.119 | 2.578 | 2.618 | 2.656 | 0.003482 | 10 AWG |
| 2.800 | 0.028 | 0.043 | 0.081 | 0.123 | 2.880 | 2.922 | 2.961 | 0.002776 | 9 AWG |
| | | | | | | | | | |
| 3.150 | 0.032 | 0.045 | 0.084 | 0.127 | 3.233 | 3.276 | 3.316 | 0.002193 | 8 AWG |
| 3.550 | 0.036 | 0.046 | 0.086 | 0.130 | 3.635 | 3.679 | 3.721 | 0.001727 | 7 AWG |
| 4.000 | 0.040 | 0.047 | 0.089 | 0.134 | 4.088 | 4.133 | 4.176 | 0.001360 | 6 AWG |
| 4.500 | 0.045 | 0.049 | 0.092 | 0.138 | 4.591 | 4.637 | 4.681 | 0.001075 | 5 AWG |
| 5.000 | 0.050 | 0.050 | 0.094 | 0.142 | 5.093 | 5.141 | 5.186 | 0.0008706 | 4 AWG |
==== Enamelled wire with a bonding layer ====
^ Nominal \\ conductor \\ diameter \\ (mm) ^ Conductor \\ tolerance \\ +/- \\ (mm) ^ Min. increase due to \\ the underlying coating \\ (mm) ^^ Min. increase \\ due to \\ bonding layer \\ (mm) ^ Max. overall \\ diameter \\ (mm) ^^ Nearest \\ AWG \\ size ^
^ ::: ^ ::: ^ Grade 1B ^ Grade 2B ^ ::: ^ Grade 1B ^ Grade 2B ^ ::: ^
| 0.020 | | 0.002 | 0.004 | 0.002 | 0.026 | 0.029 | 52 AWG |
| 0.022 | | 0.002 | 0.005 | 0.002 | 0.030 | 0.033 | 51 AWG |
| 0.025 | | 0.003 | 0.005 | 0.002 | 0.034 | 0.037 | 50 AWG |
| 0.028 | | 0.003 | 0.006 | 0.003 | 0.038 | 0.042 | 49 AWG |
| 0.032 | | 0.003 | 0.007 | 0.003 | 0.044 | 0.048 | 48 AWG |
| | | | | | | | |
| 0.036 | | 0.004 | 0.008 | 0.003 | 0.050 | 0.055 | 47 AWG |
| 0.040 | | 0.004 | 0.008 | 0.003 | 0.055 | 0.060 | 46 AWG |
| 0.045 | | 0.005 | 0.009 | 0.003 | 0.062 | 0.068 | 45 AWG |
| 0.050 | | 0.005 | 0.010 | 0.003 | 0.068 | 0.074 | 44 AWG |
| 0.056 | | 0.006 | 0.011 | 0.003 | 0.075 | 0.082 | 43 AWG |
| | | | | | | | |
| 0.063 | | 0.006 | 0.012 | 0.005 | 0.085 | 0.092 | 42 AWG |
| 0.071 | 0.003 | 0.007 | 0.012 | 0.005 | 0.094 | 0.101 | 41 AWG |
| 0.080 | 0.003 | 0.007 | 0.014 | 0.005 | 0.105 | 0.112 | 40 AWG |
| 0.090 | 0.003 | 0.008 | 0.015 | 0.005 | 0.117 | 0.125 | 39 AWG |
| 0.100 | 0.003 | 0.008 | 0.016 | 0.005 | 0.129 | 0.137 | 38 AWG |
| | | | | | | | |
| 0.112 | 0.003 | 0.009 | 0.017 | 0.008 | 0.143 | 0.152 | 37 AWG |
| 0.125 | 0.003 | 0.010 | 0.019 | 0.009 | 0.158 | 0.168 | 36 AWG |
| 0.140 | 0.003 | 0.011 | 0.021 | 0.010 | 0.175 | 0.186 | 35 AWG |
| 0.160 | 0.003 | 0.012 | 0.023 | 0.010 | 0.197 | 0.209 | 34 AWG |
| 0.180 | 0.003 | 0.013 | 0.025 | 0.010 | 0.220 | 0.233 | 33 AWG |
| | | | | | | | |
| 0.200 | 0.003 | 0.014 | 0.027 | 0.011 | 0.243 | 0.256 | 32 AWG |
| 0.224 | 0.003 | 0.015 | 0.029 | 0.012 | 0.270 | 0.284 | 31 AWG |
| 0.250 | 0.004 | 0.017 | 0.032 | 0.013 | 0.300 | 0.316 | 30 AWG |
| 0.280 | 0.004 | 0.018 | 0.033 | 0.013 | 0.331 | 0.348 | 29 AWG |
| 0.315 | 0.004 | 0.019 | 0.035 | 0.014 | 0.369 | 0.387 | 28 AWG |
| | | | | | | | |
| 0.355 | 0.004 | 0.020 | 0.038 | 0.015 | 0.413 | 0.432 | 27 AWG |
| 0.400 | 0.005 | 0.021 | 0.040 | 0.016 | 0.461 | 0.481 | 26 AWG |
| 0.450 | 0.005 | 0.022 | 0.042 | 0.016 | 0.514 | 0.536 | 25 AWG |
| 0.500 | 0.005 | 0.024 | 0.045 | 0.017 | 0.568 | 0.590 | 24 AWG |
| 0.560 | 0.006 | 0.025 | 0.047 | 0.017 | 0.630 | 0.654 | 23 AWG |
| | | | | | | | |
| 0.630 | 0.006 | 0.027 | 0.050 | 0.018 | 0.704 | 0.729 | 22 AWG |
| 0.710 | 0.007 | 0.028 | 0.053 | 0.019 | 0.788 | 0.815 | 21 AWG |
| 0.800 | 0.008 | 0.030 | 0.056 | 0.020 | 0.882 | 0.911 | 20 AWG |
| 0.900 | 0.009 | 0.032 | 0.060 | 0.020 | 0.987 | 1.017 | 19 AWG |
| 1.000 | 0.010 | 0.034 | 0.063 | 0.021 | 1.091 | 1.123 | 18 AWG |
| | | | | | | | |
| 1.120 | 0.011 | 0.034 | 0.065 | 0.022 | 1.214 | 1.247 | 17 AWG |
| 1.250 | 0.013 | 0.035 | 0.067 | 0.022 | 1.346 | 1.379 | 16 AWG |
| 1.400 | 0.014 | 0.036 | 0.069 | 0.023 | 1.499 | 1.533 | 15 AWG |
| 1.600 | 0.016 | 0.038 | 0.071 | 0.023 | 1.702 | 1.738 | 14 AWG |
| 1.800 | 0.018 | 0.039 | 0.073 | 0.024 | 1.905 | 1.942 | 13 AWG |
| | | | | | | | |
| 2.000 | 0.020 | 0.040 | 0.075 | 0.025 | 2.108 | 2.146 | 12 AWG |
{{tag> Enamelled_wire Windings Magnet_wire Copper_wire Wire_size AWG American_wire_gage American_wire_gauge Counter}}