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Electronics Reference: Wire Chart
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AWG D.C. OHMS WIRE DIA APPROX. TURNS PER FEET PER
SIZE PER 1000 FT INCHES INCH, SOLID ENAMEL POUND
COVERED
1 .1264 .2893 X 3.947
2 .1593 .2576 X 4.977
3 .2009 .2294 X 6.276
4 .2533 .2043 X 7.914
5 .3195 .1819 X 9.980
6 .4028 .1620 X 12.58
7 .5080 .1443 X 15.87
8 .6405 .1286 7.6 20.01
9 .8077 .1144 8.6 25.23
10 1.018 .1019 9.6 31.82
11 1.284 .0907 10.7 40.12
12 1.619 .0808 12.0 50.59
13 2.042 .0720 13.5 63.80
14 2.524 .0641 15.0 80.44
15 3.181 .0571 16.8 101.40
16 4.018 .0508 18.9 127.90
17 5.054 .0453 21.2 161.3
18 6.386 .0403 23.6 203.4
19 8.046 .0359 26.4 256.5
20 10.13 .0320 29.4 323.4
21 12.77 .0285 33.1 407.8
22 16.20 .0253 37.0 514.2
23 20.30 .0226 41.3 648.4
24 25.67 .0201 46.3 817.7
25 32.37 .0179 51.7 1031
26 41.02 .0159 58.0 1300
27 51.44 .0142 64.9 1639
28 65.31 .0126 72.7 2067
29 81.21 .0113 81.6 2607
30 103.7 .0100 90.5 3287
31 130.9 .0089 101 4145
32 162.0 .0080 113 5227
33 205.7 .0071 127 6591
34 261.3 .0063 143 8310
35 330.7 .0056 158 10480
36 414.8 .0050 175 13210
37 512.1 .0045 198 16660
38 648.2 .0040 224 21010
39 846.6 .0036 248 26500
40 1079 .0031 282 33410
41 1323 .0028
42 1659 .0025
43 2143 .0022
44 2593 .0020
45 3348 .00176
46 4207 .00157
47 5291 .00140
Magnet wire coatings from Phelps-Dodge:
All data pertain to 18 AWG magnet wire. Build = thickness of coating
COATING MATERIAL BUILD DC BREAKDOWN
---------- ----------------- ----- ------------
Thermaleze-T (TZT) polyester-imide 2.8mils 11kV
Armored Polythemaleze 3.05mils 11kV
(APTZ) modified polyester and
modified polyamide-imide
Imideze (ML) Aromatic polyimide 2.9mils 12kV
Formvar modified polyviynyl 3.0mils 10kV
formal
Sodereze modified polyurethane 2.9mils 8.5kV
Nyleze Polyurethane 2.9mils 8.5kV
and polyamide
Dielectric constant/DF numbers for these materials:
Material Dielectric Const. / DF x 10^-3
1kHz 100kHz 1Mhz Rating
TZT .......... 3.7/5.6 3.56/16.4 3.58/21.5 3rd
APTZ ......... 3.86/6.9 3.69/22.1 3.67/26.6 5th
ML ........... 3.34/0.9 3.3/5.7 3.36/9.8 2nd to teflon
Formvar* ..... 3.6/11.2 3.41/25.2 3.37/28.4 5th
Soldereze .... 3.85/11.3 3.66/20.7 3.66/23.1 4th
Nyleze ....... 4.07/19.7 3.78/27.1 3.75/27.2 6th
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A Division of R.S.R. Electronics, Inc.
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Phone 1-800-972-2225 (In NJ 1-732-381-8020)
Fax 1-732-381-1006; 1-732-381-1572
Last Modified March 19, 2001
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