Wire size, AWG	Current-carrying, amp (2 or 3 wires in cable or raceway)	Area cir. mils	Weight of bare wire, lb/1,000 ft	Resistance ohms/1,000 ft, 20°C	Current-carrying capacity, amp (single wire in open air)
14	15	4,107	12.43	2.58	20.0
12	30	6,530	17.77	1.62	25.0
10	30	10,380	31.43	1.02	40.0
8	40	16,510	49.98	0.641	55.0
6	55	26,250	79.46	0.410	80.0
4	70	41,740	126.4	0.259	105.0
3	80	52,640	159.3	0.205	120.0
2	95	66,370	200.9	0.162	140.0
1	110	83,690	253.3	0.129	165.0
0	125	105,500	319.5	0.102	195.0
00	145	133,100	402.8	0.081	225.0
000	165	167,800	507.9	0.064	260.0
0000	195	211,600	640.5	0.051	300.0
Wire Size =	215	250,000	772.0	0.043	340.0
Area, Cir Mils	240	300,000	926.0	0.036	375.0
	260	350,000	-	0.031	420.0
	280	400,000	-	0.027	455.0
	320	500,000	-	0.022	515.0

*For types T, R, TW, and RW insulations.