表格中的數據包括各種導線的阻抗和允許電流大小(安培)。表中的直徑數值適用於實心電線。雙絞線應當根據銅線橫截面面積進行計算。下面的表格適用於直流情況,或者頻率小於等於60赫茲的情況,也沒有考慮集膚效應。
更多資訊 AWG, 直徑 ...
AWG
|
直徑
|
直徑之倒數(無絕緣時,
單位長度可排下之線數)
(說明1)
|
截面積
|
銅線
|
銅阻抗
|
用不同額定溫度的絕緣物質,在室溫 20℃ 下之載流量 (容許電流),
16 AWG 及以下指設備中的單線(未集束):
|
熔斷電流(說明2)
|
60 °C
|
75 °C
|
90 °C
|
Preece
|
Onderdonk
|
(in)
|
(mm)
|
(per in)
|
(per cm)
|
(kcmil)
|
(mm2)
|
(mΩ/m)
|
(mΩ/ft)
|
(A)
|
~10 s
|
1 s
|
32 ms
|
0000 (4/0)
|
0.4600[a]
|
11.684[a]
|
2.17
|
0.856
|
212
|
107
|
0.1608
|
0.04901
|
195
|
230
|
260
|
3.2 kA
|
33 kA
|
182 kA
|
000 (3/0)
|
0.4096
|
10.405
|
2.44
|
0.961
|
168
|
85.0
|
0.2028
|
0.06180
|
165
|
200
|
225
|
2.7 kA
|
26 kA
|
144 kA
|
00 (2/0)
|
0.3648
|
9.266
|
2.74
|
1.08
|
133
|
67.4
|
0.2557
|
0.07793
|
145
|
175
|
195
|
2.3 kA
|
21 kA
|
115 kA
|
0 (1/0)
|
0.3249
|
8.251
|
3.08
|
1.21
|
106
|
53.5
|
0.3224
|
0.09827
|
125
|
150
|
170
|
1.9 kA
|
16 kA
|
91 kA
|
1
|
0.2893
|
7.348
|
3.46
|
1.36
|
83.7
|
42.4
|
0.4066
|
0.1239
|
110
|
130
|
145
|
1.6 kA
|
13 kA
|
72 kA
|
2
|
0.2576
|
6.544
|
3.88
|
1.53
|
66.4
|
33.6
|
0.5127
|
0.1563
|
95
|
115
|
130
|
1.3 kA
|
10.2 kA
|
57 kA
|
3
|
0.2294
|
5.827
|
4.36
|
1.72
|
52.6
|
26.7
|
0.6465
|
0.1970
|
85
|
100
|
115
|
1.1 kA
|
8.1 kA
|
45 kA
|
4
|
0.2043
|
5.189
|
4.89
|
1.93
|
41.7
|
21.2
|
0.8152
|
0.2485
|
70
|
85
|
95
|
946 A
|
6.4 kA
|
36 kA
|
5
|
0.1819
|
4.621
|
5.50
|
2.16
|
33.1
|
16.8
|
1.028
|
0.3133
|
|
795 A
|
5.1 kA
|
28 kA
|
6
|
0.1620
|
4.115
|
6.17
|
2.43
|
26.3
|
13.3
|
1.296
|
0.3951
|
55
|
65
|
75
|
668 A
|
4.0 kA
|
23 kA
|
7
|
0.1443
|
3.665
|
6.93
|
2.73
|
20.8
|
10.5
|
1.634
|
0.4982
|
|
561 A
|
3.2 kA
|
18 kA
|
8
|
0.1285
|
3.264
|
7.78
|
3.06
|
16.5
|
8.37
|
2.061
|
0.6282
|
40
|
50
|
55
|
472 A
|
2.5 kA
|
14 kA
|
9
|
0.1144
|
2.906
|
8.74
|
3.44
|
13.1
|
6.63
|
2.599
|
0.7921
|
|
396 A
|
2.0 kA
|
11 kA
|
10
|
0.1019
|
2.588
|
9.81
|
3.86
|
10.4
|
5.26
|
3.277
|
0.9989
|
30
|
35
|
40
|
333 A
|
1.6 kA
|
8.9 kA
|
11
|
0.0907
|
2.305
|
11.0
|
4.34
|
8.23
|
4.17
|
4.132
|
1.260
|
|
280 A
|
1.3 kA
|
7.1 kA
|
12
|
0.0808
|
2.053
|
12.4
|
4.87
|
6.53
|
3.31
|
5.211
|
1.588
|
20
|
25
|
30
|
235 A
|
1.0 kA
|
5.6 kA
|
13
|
0.0720
|
1.828
|
13.9
|
5.47
|
5.18
|
2.62
|
6.571
|
2.003
|
|
198 A
|
798 A
|
4.5 kA
|
14
|
0.0641
|
1.628
|
15.6
|
6.14
|
4.11
|
2.08
|
8.286
|
2.525
|
15
|
20
|
25
|
166 A
|
633 A
|
3.5 kA
|
15
|
0.0571
|
1.450
|
17.5
|
6.90
|
3.26
|
1.65
|
10.45
|
3.184
|
|
140 A
|
502 A
|
2.8 kA
|
16
|
0.0508
|
1.291
|
19.7
|
7.75
|
2.58
|
1.31
|
13.17
|
4.016
|
22*流通空氣
|
13*密閉
|
18
|
117 A
|
398 A
|
2.2 kA
|
17
|
0.0453
|
1.150
|
22.1
|
8.70
|
2.05
|
1.04
|
16.61
|
5.064
|
|
99 A
|
316 A
|
1.8 kA
|
18
|
0.0403
|
1.024
|
24.8
|
9.77
|
1.62
|
0.823
|
20.95
|
6.385
|
10
|
14
|
16
|
83 A
|
250 A
|
1.4 kA
|
19
|
0.0359
|
0.912
|
27.9
|
11.0
|
1.29
|
0.653
|
26.42
|
8.051
|
—
|
—
|
—
|
70 A
|
198 A
|
1.1 kA
|
20
|
0.0320
|
0.812
|
31.3
|
12.3
|
1.02
|
0.518
|
33.31
|
10.15
|
5
|
11
|
—
|
58.5 A
|
158 A
|
882 A
|
21
|
0.0285
|
0.723
|
35.1
|
13.8
|
0.810
|
0.410
|
42.00
|
12.80
|
—
|
—
|
—
|
49 A
|
125 A
|
700 A
|
22
|
0.0253
|
0.644
|
39.5
|
15.5
|
0.642
|
0.326
|
52.96
|
16.14
|
3
|
7
|
—
|
41 A
|
99 A
|
551 A
|
23
|
0.0226
|
0.573
|
44.3
|
17.4
|
0.509
|
0.258
|
66.79
|
20.36
|
—
|
—
|
—
|
35 A
|
79 A
|
440 A
|
24
|
0.0201
|
0.511
|
49.7
|
19.6
|
0.404
|
0.205
|
84.22
|
25.67
|
2.1
|
3.5
|
—
|
29 A
|
62 A
|
348 A
|
25
|
0.0179
|
0.455
|
55.9
|
22.0
|
0.320
|
0.162
|
106.2
|
32.37
|
—
|
—
|
—
|
24 A
|
49 A
|
276 A
|
26
|
0.0159
|
0.405
|
62.7
|
24.7
|
0.254
|
0.129
|
133.9
|
40.81
|
1.3
|
2.2
|
—
|
20 A
|
39 A
|
218 A
|
27
|
0.0142
|
0.361
|
70.4
|
27.7
|
0.202
|
0.102
|
168.9
|
51.47
|
—
|
—
|
—
|
17 A
|
31 A
|
174 A
|
28
|
0.0126
|
0.321
|
79.1
|
31.1
|
0.160
|
0.0810
|
212.9
|
64.90
|
0.83
|
1.4
|
—
|
14 A
|
24 A
|
137 A
|
29
|
0.0113
|
0.286
|
88.8
|
35.0
|
0.127
|
0.0642
|
268.5
|
81.84
|
—
|
—
|
—
|
12 A
|
20 A
|
110 A
|
30
|
0.0100
|
0.255
|
99.7
|
39.3
|
0.101
|
0.0509
|
338.6
|
103.2
|
0.52
|
0.86
|
—
|
10 A
|
15 A
|
86 A
|
31
|
0.00893
|
0.227
|
112
|
44.1
|
0.0797
|
0.0404
|
426.9
|
130.1
|
—
|
—
|
—
|
9 A
|
12 A
|
69 A
|
32
|
0.00795
|
0.202
|
126
|
49.5
|
0.0632
|
0.0320
|
538.3
|
164.1
|
0.32
|
0.53
|
—
|
7 A
|
10 A
|
54 A
|
33
|
0.00708
|
0.180
|
141
|
55.6
|
0.0501
|
0.0254
|
678.8
|
206.9
|
—
|
—
|
—
|
6 A
|
7.7 A
|
43 A
|
34
|
0.00630
|
0.160
|
159
|
62.4
|
0.0398
|
0.0201
|
856.0
|
260.9
|
0.18
|
0.3
|
—
|
5 A
|
6.1 A
|
34 A
|
35
|
0.00561
|
0.143
|
178
|
70.1
|
0.0315
|
0.0160
|
1079
|
329.0
|
—
|
—
|
—
|
4 A
|
4.8 A
|
27 A
|
36
|
0.00500
|
0.127[a]
|
200[a]
|
78.7
|
0.0250
|
0.0127
|
1361
|
414.8
|
—
|
—
|
—
|
4 A
|
3.9 A
|
22 A
|
37
|
0.00445
|
0.113
|
225
|
88.4
|
0.0198
|
0.0100
|
1716
|
523.1
|
—
|
—
|
—
|
3 A
|
3.1 A
|
17 A
|
38
|
0.00397
|
0.101
|
252
|
99.3
|
0.0157
|
0.00797
|
2164
|
659.6
|
—
|
—
|
—
|
3 A
|
2.4 A
|
14 A
|
39
|
0.00353
|
0.0897
|
283
|
111
|
0.0125
|
0.00632
|
2729
|
831.8
|
—
|
—
|
—
|
2 A
|
1.9 A
|
11 A
|
40
|
0.00314
|
0.0799
|
318
|
125
|
0.00989
|
0.00501
|
3441
|
1049
|
—
|
—
|
—
|
1 A
|
1.5 A
|
8.5 A
|
關閉
說明1:本欄僅供參考,因為實際繞製線圈時須使用有絕緣包覆之漆包線,絕緣層厚度需加入考慮。
說明2:依據 Standard Handbook for Electrical Engineers 第4-25頁(第15版或16版)提到的兩種公式計算而得 Beaty, H. Wayne; Fink, Donald G. (編), Standard Handbook for Electrical Engineers 15th, McGraw Hill: 4–25, 2007, ISBN 978-0-07-144146-9
說明3:線規與載流量以及趨膚效應的關係:http://www.powerstream.com/Wire_Size.htm (頁面存檔備份,存於網際網路檔案館)