Common Wire Gauges

常用导线规格

The common U.S. wire gauges (called AWG gauges) refer to sizes of copper wire. The resistivity of copper at 20 C is about

美国常用的铜线号（称为AWG号）指的是铜线的尺寸。铜在20°C时的电阻率约为

This table uses this value of resistivity, but it is known to vary by a few percent based on purity and process of manufacture.

这张表格使用这个电阻率值，但已知该值会因纯度和制造工艺而变化几个百分点。

AWG wire size (solid) AWG导线尺寸（实心）	Diameter (inches) 直径（英寸）	Resistance per 1000 ft (ohms) 每1000英尺的电阻（欧姆）	Resistance per 1000 m (ohms) 每1000米的电阻（欧姆）
24	0.0201	25.67	84.2
22	0.0254	16.14	52.7
20	0.0320	10.15	33.2
18	0.0403	6.385	20.9
16	0.0508	4.016	13.2
14	0.0640	2.525	8.28
12	0.0808	1.588	5.21
10	0.1019	0.999	3.28

Resistance

电阻

Resistivity discussion

电阻率讨论

More extensive table

更详尽的表格

Index

Tables

索引表

HyperPhysics***** Electricity and Magnetism

HyperPhysics ***** 电学和磁学

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American Wire Gages (AWG) Sizes and Resistances

美国线规（AWG）尺寸和电阻

AWG wire size (solid) AWG导线尺寸（实心）	Area CM* 面积中心（CM*）	Resistance per 1000 ft (ohms) @ 20 C 每1000英尺（欧姆）@ 20摄氏度的电阻	Diameter (inches) 直径（英寸）	Maximum current** (amperes) 最大电流（安培）
0000	211600	0.049	0.46	380
000	167810	0.0618	0.40965	328
00	133080	0.078	0.3648	283
0	105530	0.0983	0.32485	245
1	83694	0.124	0.2893	211
2	66373	0.1563	0.25763	181
3	52634	0.197	0.22942	158
4	41742	0.2485	0.20431	135
5	33102	0.3133	0.18194	118
6	26250	0.3951	0.16202	101
7	20816	0.4982	0.14428	89
8	16509	0.6282	0.12849	73
9	13094	0.7921	0.11443	64
10	10381	0.9989	0.10189	55
11	8234	1.26	0.09074	47
12	6529	1.588	0.0808	41
13	5178.4	2.003	0.07196	35
14	4106.8	2.525	0.06408	32
15	3256.7	3.184	0.05707	28
16	2582.9	4.016	0.05082	22
17	2048.2	5.064	0.04526	19
18	1624.3	6.385	0.0403	16
19	1288.1	8.051	0.03589	14
20	1021.5	10.15	0.03196	11
21	810.1	12.8	0.02846	9
22	642.4	16.14	0.02535	7
23	509.45	20.36	0.02257	4.7
24	404.01	25.67	0.0201	3.5
25	320.4	32.37	0.0179	2.7
26	254.1	40.81	0.01594	2.2
27	201.5	51.47	0.0142	1.7
28	159.79	64.9	0.01264	1.4
29	126.72	81.83	0.01126	1.2
30	100.5	103.2	0.01002	0.86
31	79.7	130.1	0.00893	0.7
32	63.21	164.1	0.00795	0.53
33	50.13	206.9	0.00708	0.43
34	39.75	260.9	0.0063	0.33
35	31.52	329	0.00561	0.27
36	25	414.8	0.005	0.21
37	19.83	523.1	0.00445	0.17
38	15.72	659.6	0.00396	0.13
39	12.47	831.8	0.00353	0.11
40	9.89	1049	0.00314	0.09

The U.S. wire gauges (called AWG gauges) refer to sizes of copper wire. This table corresponds to a resistivity of

美国的线号（称为AWG线号）指的是铜线的尺寸。此表对应的是

for copper at 20 C. This table uses this value of resistivity, but it is known to vary by a few percent based on purity and process of manufacture.

铜在20°C时的电阻率。这张表使用了这个电阻率值，但已知会因纯度和制造工艺而变化几个百分点。

*The AWG system states areas of round copper wires in "circular mils", which is the square of the diameter in mils. 1 mil =.001 inch.

AWG系统以'圆 mil'（圆 mil）表示圆铜线的截面积，其定义为以mil为单位的直径的平方。1 mil = 0.001英寸。

This data from Floyd, Electric Circuit Fundamentals, 2nd Ed.

这些数据来自Floyd的《电路基础》（第二版）

**Maximum current for chassis wiring. Data from Handbook of Electronic Tables and Formulas for American Wire Gauge. The maximum current for power transmission is less.

机架布线的最大电流。数据来自《美国线号表和公式手册》。电力传输的最大电流较小。