Copper Wire - Electrical Resistance vs. Gauge

Gauge, weight, circular mils and electrical resistance in copper wire.

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Electrical resistance in copper wire:

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Copper Wire - Electrical Resistance vs. Gauge
AWG Gauge^*	Area (Circular Mils)	Diameter (mils, 1000th in)	Electrical Resistance (Ohms/1000 ft)		Weight (lb/1000 ft)
AWG Gauge^*	Area (Circular Mils)	Diameter (mils, 1000th in)	at 77^oF (25^oC)	at 149^oF (65^oC)	Weight (lb/1000 ft)
0000 (4/0)	212000	460	0.0500	0.057	641
000 (3/0)	168000	410	0.0630	0.073	508
00 (2/0)	133000	365	0.0795	0.092	403
0 (1/0)	106000	325	0.100	0.116	319
1	83700	289	0.126	0.146	253
2	66400	258	0.159	0.184	201
3	52600	229	0.201	0.232	159
4	41700	204	0.253	0.292	126
5	33100		0.319		100
6	26300	162	0.403	0.465	79.5
7	20800		0.508		63.0
8	16500	128	0.641	0.739	50.0
9	13100		0.808		39.6
10	10400	102	1.02	1.18	31.4
11	8230		1.28		24.9
12	6530	81	1.62	1.87	19.8
13	5180		2.04		15.7
14	4110	64	2.58	2.97	12.4
15	3260		3.25		9.86
16	2580	51	4.09	4.73	7.82
17	2050		5.16		6.20
18	1620	40	6.51	7.51	4.92
19	1290		8.21		3.90
20	1020	32	10.4	11.9	3.09
21	810		13.1		2.45
22	642	25.3	16.5	19.0	1.94
23	509		20.8		1.54
24	404	20.1	26.2	30.2	1.22
25	320		33.0		0.970
26	254	15.9	41.6	48.0	0.769
27	202		52.5		0.610
28	160	12.6	66.2	76.4	0.484
29	127		83.4		0.384
30	101	10	105	121	0.304
31	79.7		133		0.241
32	63.2	8	167	193	0.191
33	50.1		211		0.152
34	39.8	6.3	266	307	0.120
35	31.6		335		0.095
36	25.0	5	423	488	0.076
37	19.8		533		0.060
38	15.7	4	673	776	0.048
39	12.5		848		0.038
40	9.9	3.1	1070	1230	0.020