TABLE SHOWING THE RELATIVE DIMENSIONS, LENGTHS, RESISTANCES, AND WEIGHTS OF PURE COPPER WIRE.
DIAMETER | AREA
|
B.W.G Inch. Milli- | Circu- Square Square
No. metres | lar inches. Milli-
| Mils. metres.
|
0000 .454 11.5313 | 206116 .161883 10.4435
000 .425 10.795 | 180625 .141862 9.152
00 .38 9.6518 | 144400 .113411 7.3165
0 .34 8.6358 | 115600 .0907922 5.8573
1 .3 7.620 | 90000 .070686 4.5602
2 .284 7.2134 | 80656 .0633472 4.0867
3 .259 6.5784 | 67081 .0526854 3.3989
4 .238 6.0451 | 56644 .0444881 2.8701
5 .22 5.5879 | 48400 .0380133 2.4523
6 .203 5.1561 | 41209 .0323655 2.088
7 .18 4.5719 | 32400 .0254469 1.6417
8 .165 4.1909 | 27225 .0213825 1.3794
9 .148 3.7591 | 21904 .0172034 1.1098
10 .134 3.4035 | 17956 .0141026 .9096
11 .12 3.0479 | 14400 .0113097 .7296
12 .109 2.7701 | 11881 .00933133 .60199
13 .095 2.4129 | 9025 .0070882 .4573
14 .083 2.1082 | 6889 .00541062 .34906
15 .072 1.8288 | 5184 .00407151 .2486
16 .065 1.6510 | 4225 .00331831 .21407
17 .058 1.4732 | 3364 .0026421 .17045
18 .049 1.2446 | 2401 .00188574 .12165
19 .042 1.0668 | 1764 .00138544 .0894
20 .035 0.8890 | 1225 .000962115 .06207
21 .032 0.8128 | 1024 .00080425 .05188
22 .028 0.7112 | 784 .000615753 .03972
23 .025 0.635 | 625 .00049087 .03167
24 .022 0.5588 | 484 .000380133 .02452
25 .02 0.508 | 400 .00031416 .02027
26 .018 0.4571 | 324 .000254469 .01642
27 .016 0.4064 | 256 .000201062 .01297
28 .014 0.3556 | 196 .000153938 .00993
29 .013 0.3302 | 169 .000132732 .00856
30 .012 0.3048 | 144 .000113097 .007296
LENGTH AND WEIGHT
B.W.G Pounds Pounds Pounds Pounds Feet Yards 1.000 feet Miles
No. per per per 1.000 per per lb. per lb. per lb. per lb.
foot. Yard ft. mile.
0000 .623924 1.871772 623.924 3294.32 1.60276 .534253 .00160276 .00303553
000 .54676 1.64028 546.76 2886.89 1.82895 .60965 .00182895 .0034639
00 .437105 1.311315 437.105 2307.92 2.28777 .76259 .00228777 .004333
0 .349928 1.049784 349.928 1847.62 2.85773 .9525766 .00285773 .0054124
1 .272435 .817305 272.435 1438.43 3.6706 1.22353 .0036706 .0069519
2 .244151 .732453 244.151 1289.11 4.0958 1.365266 .0040958 .0077573
3 .203058 .609174 203.058 1072.15 4.9247 1.641566 .0049247 .009327
4 .171463 .514395 171.465 905.333 5.8321 1.944033 .0058321 .0110457
5 .14651 .43953 146.510 773.56 6.8255 2.275166 .0068255 .012927
6 .124742 .374226 124.742 658.638 8.0165 2.672166 .0080165 .015183
7 .098076 .294228 98.076 517.844 10.1962 3.39873 .0101962 .019311
8 .082411 .247233 82.411 435.135 12.1345 4.04483 .0121345 .022981
9 .066305 .198915 66.305 350.089 15.0818 5.027266 .0150818 .028564
10 .054354 .163062 54.354 286.99 18.398 6.13266 .018398 .034845
11 .04359 .13077 43.590 230.152 22.9413 7.6471 .0229413 .04345
12 .035964 .107892 35.964 189.893 27.805 9.2683 .027805 .05266
13 .027319 .081957 27.319 144.245 36.6046 12.20153 .0366046 .069326
14 .020853 .062559 20.853 110.1088 47.954 15.98466 .047954 .09082
15 .015692 .047076 15.692 82.855 63.7267 21.24223 .0637261 .12069
16 .012789 .038367 12.789 67.5276 78.1902 26.0634 .0781902 .14809
17 .0101828 .0305484 10.1828 53.7665 98.202 32.734 .098203 .18589
18 .00726795 .02180388 7.26796 38.3748 137.590 45.8633 .137590 .260587
19 .00533972 .01601916 5.33972 28.1937 187.276 62.4253 .187276 .35469
20 .00370815 .01112445 3.70815 19.579 269.676 89.892 .2696676 .51075
21 .00309972 .00929910 3.09972 16.3665 322.610 107.5366 .322610 .61100
22 .00237312 .00711936 2.37312 12.5301 421.384 140.4613 .421334 .798078
23 .0018910 .0056757 1.8919 9.9892 528.570 176.190 .528570 .100108
24 .0014650 .0043950 1.4650 7.7357 682.55 227.5166 .68255 .129271
25 .00121082 .00363246 1.21082 6.39315 825.880 275.2943 .825883 .156417
26 .00098077 .00294231 .98077 5.17844 1019.61 339.870 1.01961 .193108
27 .00077492 .00232476 .77492 4.0916 1290.44 430.1466 1.29044 .24440
28 .0005933 .0017799 .5933 3.13264 1685.48 561.8266 1.68548 .31922
29 .000511571 .001534713 .511571 2.7011 1954.76 651.5866 1.95476 .370220
30 .0004359 .0013077 .4359 2.30152 2294.13 764.710 2.29413 .434496
LENGTH AND RESISTANCE
B.W.G Feet Yards 1.000 feet Miles Ohms Ohms Ohms Ohms
No. per Ohm. per Ohm. per Ohm. per Ohm. per foot. per yard. per 1.000 per mile.
foot.
0000 19966.5 6655.5 19.9665 3.7815 .000050684 .00156252 .050084 .264443
000 17497.15 5832.3833 17.49715 3.31385 .0000571522 .0001714566 .0571522 .301763
00 13988.64 4662.68 13.98804 2.64925 .000071489 .000214467 .071489 .377465
0 11198.17 3732.7333 11.19817 2.12086 .0000893002 .0002679006 .0893002 .471505
1 8718.30 2906.10 8.71830 1.6512 .00011470 .0003441 .114701 .60562
2 7813.50 2604.50 7.81350 1.47973 .00012799 .00038397 .12799 .67580
3 6498.14 2166.0466 6.49814 1.23071 .00015389 .00046167 .15389 .81254
4 5487.107 1829.0357 5.487107 1.03923 .000182245 .000546735 .182245 .962256
5 4688.51 1562.8366 4.68851 .887975 .000213287 .000639861 .213287 1.12616
6 3991.91 1330.6366 3.99191 .756045 .000250506 .000751518 .250506 1.32267
7 3138.59 1046.1966 3.13859 .59443 .000318614 .000955842 .318614 1.68228
8 2637.29 879.0966 2.63729 .499486 .000379177 .001137531 .379177 2.00206
9 2121.84 707.280 2.12184 .401864 .000471289 .001413867 .471289 2.488405
10 1739.40 579.80 1.73940 .329432 .000574911 .001724733 .574911 3.03553
11 1394.93 464.9766 1.39493 .264191 .000716882 .002150646 .716882 3.78514
12 1150.91 383.6366 1.15091 .217976 .000868875 .002606625 .868875 4.58766
13 874.252 291.4173 .874252 .165578 .00114383 .00343149 1.14383 6.03945
14 667.338 222.446 .667338 .12639 .00149849 .00449547 1.49849 7.91203
15 502.175 167.39166 .502175 .095109 .00199134 .00597402 1.99134 10.5142
16 409.276 136.42533 .409276 .077514 .00244334 .00733002 2.44334 12.9008
17 325.871 108.62366 .325871 .061718 .0030687 .0092061 3.0687 16.20274
18 232.585 77.52833 .232585 .04405 .0042995 .0128985 4.2995 22.7014
19 170.879 56.95966 .170879 .032363 .0058521 .0175563 5.8521 30.8991
20 149.3915 49.797166 .1493915 .022475 .00842703 .02528109 8.42703 44.4947
21 99.195 33.065 .099195 .018787 .01008110 .03024348 10.08116 53.2285
22 75.9461 25.315366 .0759461 .014384 .0131672 .0395016 13.1672 69.5230
23 60.54377 20.181256 .06054377 .011467 .0165170 .0495510 16.5170 87.2096
24 46.8851 15.628356 .0468851 .0088798 .02132874 .06398622 21.32874 112.616
25 38.748 12.916 .038748 .0073386 .025808 .077424 25.808 136.265
26 31.3859 10.461966 .0313859 .0059443 .03186144 .09558432 31.86144 168.229
27 24.79873 8.266243 .02479873 .0046967 .0403246 .1209738 40.3246 212.914
28 18.98653 6.328843 .01898653 .0035959 .05266892 .15800676 52.66892 278.092
29 16.3710 5.4570 .0163710 .0031006 .0610834 .1832502 61.0834 322.521
30 13.9493 4.649766 .0139493 .0026419 .07168825 .21506475 71.68825 378.514
RESISTANCE & WEIGHT
B.W.G Ohms Lbs.
No. per lb. per Ohm.
0000 .000080272 12457.5
000 .000104529 9566.7
00 .000163553 6114.24
0 .000255196 3918.58
1 .00042102 2375.18
2 .00052422 1907.59
3 .00075786 1319.50
4 .0010629 940.844
5 .0014558 686.911
6 .0020082 497.96
7 .00324863 307.822
8 .00460101 217.343
9 .00710791 140.689
10 .0105772 94.543
11 .0164462 60.842
12 .0241593 41.392
13 .0418692 23.8839
14 .0718583 13.9163
15 .126788 7.8872
16 .191045 5.2344
17 .301355 3.31835
18 .59157 1.6904
19 1.09596 .912445
20 2.27254 .44003
21 3.25229 .30748
22 5.54843 .18023
23 8.73035 .11454
24 14.5579 .068691
25 21.3142 .046917
26 32.4863 .030782
27 52.0367 .019217
28 88.7724 .011265
29 119.404 .008375
30 164.4762 .0060804
PURE COPPER weighs 555 lbs. per cubic foot. The Resistance of 1 mil. foot at 60° Fahr. is, according to Dr. Matthiessen, 10.32311 ohms. Upon these data the above Table has been calculated.
The Resistance of Copper varies with the temperature about 0.38 per cent. per degree Centigrade, or 0.21 per cent. per degree Fahrenheit.
STRANDED WIRES.--With a conductor of a definite lenght, made of Stranded Wires, the total weight is greater, and the Resistance less than is a similar length of Conductor with Wires not Stranded.
To convert--Inches to Millimetres multiply by 25.3994
Feet to Metres " .3048
Yards to Metres " .9144
Miles to Kilometres " .6214
Pounds to Kilogrammes " .45359
PEPARED BY WALTER T. GLOVER & CO., ELECTRICAL WIRE AND CABLE MAKERS, 25, BOOTH STREET MANCHESTER.