American Wire Gauge Cable Sizes

American Wire Gauge (AWG) Cable / Conductor Sizes and Properties

Properties of Conductors

Size (AWG MCM)	Area circle (mils)	Concentric lay conductors		Bare conductors		DC resistance Ω/M ft at 77°F (25°C)**
		No. of wires	Diameter each wire (inch)	Diameter (inch)	Area (sq inch)	Copper		Aluminum
						Bare	Tin’d
18	1620	—	—	0.0403	0.0013	6.51	6.79	10.7
16	2580	—	—	0.0508	0.0020	4.10	4.26	6.72
14	4110	—	—	0.0641	0.0032	2.57	2.68	4.22
12	6530	—	—	0.0808	0.0051	1.62	1.68	2.66
10	10,380	—	—	0.1019	0.0081	1.018	1.06	1.67
8	16,510	—	—	0.1285	0.0130	0.6404	0.659	1.05
6	26,240	7	0.0612	0.184	0.027	0.410	0.427	0.674
4	41,740	7	0.0772	0.232	0.042	0.259	0.269	0.424
3	52,620	7	0.0867	0.260	0.053	0.205	0.213	0.336
2	66,360	7	0.0974	0.292	0.067	0.162	0.169	0.266
1	83,690	19	0.0664	0.332	0.087	0.129	0.134	0.211
0	105,600	19	0.0745	0.372	0.109	0.102	0.106	0.168
00	133,100	19	0.0837	0.418	0.137	0.0811	0.0843	0.133
000	167,800	19	0.0940	0.470	0.173	0.0642	0.0668	0.105
0000	211,600	19	0.1055	0.528	0.219	0.0509	0.0525	0.0836
250	250,000	37	0.0822	0.575	0.260	0.0431	0.0449	0.0708
300	300,000	37	0.0900	0.630	0.312	0.0360	0.0374	0.0590
350	350,000	37	0.0973	0.681	0.364	0.0308	0.0320	0.0505
400	400,000	37	0.1040	0.728	0.416	0.0270	0.0278	0.0442
500	500,000	37	0.1162	0.813	0.519	0.0216	0.0222	0.0354
600	600,000	61	0.0992	0.893	0.626	0.0180	0.0187	0.0295
700	700,000	61	0.1071	0.964	0.730	0.0154	0.0159	0.0253
750	750,000	61	0.1109	0.998	0.782	0.0144	0.0148	0.0236
800	800,000	61	0.1145	1.030	0.833	0.0135	0.0139	0.0221
900	900,000	61	0.1215	1.090	0.933	0.0120	0.0123	0.0197
1000	1,000,000	61	0.1280	1.150	1.039	0.0108	0.0111	0.0177
1250	1,250,000	91	0.1172	1.289	1.305	0.00863	0.00888	0.0142
1500	1,500,000	91	0.1284	1.140	1.561	0.00719	0.00740	0.0118
1750	1,750,000	127	0.1174	1.526	1.829	0.00616	0.00634	0.0101
2000	2,000,000	127	0.1255	1.630	2.087	0.00539	0.00555	0.00885

** The resistance values given in the last three columns apply only to direct current. When using conductors larger than number 4/0 with alternating current, use the multiplying factors in the table below to compensate for skin effect.

 

Multiplying Factors for Converting Resistance
to 60-Hertz AC Resistance

Size	Multiplying factor
	For nonmetallic sheathed cables in air or nonmetallic conduits		For metallic sheathed cables or all cables in metallic raceways
	Copper	Aluminum	Copper	Aluminum
Up to 3 AWG	1.000	1.000	1.00	1.00
Up to 2 AWG	1.000	1.000	1.01	1.00
Up to 1 AWG	1.000	1.000	1.01	1.00
0	1.001	1.000	1.02	1.00
00	1.001	1.001	1.03	1.00
000	1.002	1.001	1.04	1.01
0000	1.004	1.002	1.05	1.01
250 MCM	1.005	1.002	1.06	1.02
300 MCM	1.006	1.003	1.07	1.02
350 MCM	1.009	1.004	1.08	1.03
400 MCM	1.011	1.005	1.10	1.04
500 MCM	1.018	1.007	1.13	1.06
600 MCM	1.025	1.010	1.16	1.08
700 MCM	1.034	1.013	1.19	1.11
750 MCM	1.039	1.015	1.21	1.12
800 MCM	1.044	1.017	1.22	1.14
1000 MCM	1.067	1.026	1.30	1.19
1250 MCM	1.102	1.040	1.41	1.27
1500 MCM	1.142	1.058	1.53	1.36
1750 MCM	1.185	1.079	1.67	1.46
2000 MCM	1.233	1.100	1.82	1.56