Wire Sizing Guide

I got tired of Googleing this every time I needed it, so here is my version.

Gauge	Conductor Diameter	Conductor Diameter	Ohms per km	Maximum Current	Maximum Continuous Current	Cross Sectional Area	Will fit metric lug
Unit	Inches	mm	Ohms	Amps	Amps	mm2	mm2
0000 (4/0)	0.46	11.7	0.161	380	302	107	120
000 (3/0)	0.41	10.4	0.20	328	239	85	95
00 (2/0)	0.36	9.3	0.26	283	190	67.4	70
0 (1/0)	0.32	8.3	0.32	245	150	53.5
1	0.29	7.3	0.41	211	119	42.4	50
2	0.26	6.5	0.51	181	94	33.6	35
3	0.23	5.8	0.65	158	75	26.7
4	0.20	5.2	0.82	135	60	21.2	25
5	0.182	4.6	1.03	118	47	16.8
6	0.162	4.1	1.30	101	37	13.3	16
7	0.144	3.7	1.63	89	30	10.5
8	0.129	3.3	2.1	73	24	8.37	10
9	0.114	2.9	2.6	64	19.0	6.63
10	0.102	2.6	3.3	55	15.0	5.26	6
11	0.091	2.3	4.1	47	12.0	4.17
12	0.081	2.1	5.2	41	9.3	3.31	4
13	0.072	1.83	6.6	35	7.4	2.62
14	0.064	1.63	8.3	32	5.9	2.08	2.5
15	0.057	1.45	10.4	28	4.7	1.65
16	0.051	1.29	13.2	22	3.7	1.31	1.5
17	0.045	1.15	16.6	19	2.9	1.04
18	0.040	1.02	21	16	2.3	0.823
19	0.036	0.91	26	14	1.80	0.653
20	0.032	0.81	33	11	1.50	0.518
21	0.029	0.72	42	9	1.20	0.41
22	0.025	0.65	53	7	0.92	0.326
23	0.023	0.57	67	4.7	0.729	0.258
24	0.020	0.51	84	3.5	0.577	0.205
25	0.018	0.45	106	2.7	0.457	0.162
26	0.016	0.40	134	2.2	0.361	0.129
27	0.014	0.36	169	1.7	0.288	0.102
28	0.013	0.32	213	1.4	0.226	0.081
29	0.011	0.29	268	1.2	0.1820	0.0642
30	0.010	0.25	338	0.86	0.1420	0.0509
31	0.0089	0.23	427	0.7	0.1130	0.0404
32	0.0080	0.20	538	0.53	0.0910	0.032