AWG Wire Size Ampacity Chart

This table shows the current-carrying capacity (ampacity) of insulated conductors rated up to 2000 Volts, at ambient temperatures of $30^\circ\text{C}$ ($86^\circ\text{F}$).

Ampacity Table

Conductor Size (AWG/kcmil)	Copper 60°C (TW)	Copper 75°C (THWN)	Copper 90°C (THHN)	Aluminum 75°C (THWN)	Aluminum 90°C (THHN)
14	15 A	20 A	25 A	—	—
12	20 A	25 A	30 A	20 A	25 A
10	30 A	35 A	40 A	30 A	35 A
8	40 A	50 A	55 A	40 A	45 A
6	55 A	65 A	75 A	50 A	60 A
4	70 A	85 A	95 A	65 A	75 A
2	95 A	115 A	130 A	90 A	100 A
1/0	125 A	150 A	170 A	120 A	135 A
2/0	145 A	175 A	195 A	135 A	150 A
4/0	195 A	230 A	260 A	180 A	205 A
250 kcmil	215 A	255 A	290 A	205 A	230 A
500 kcmil	320 A	380 A	430 A	310 A	350 A

Note: For circuit protection, the NEC limits overcurrent device sizing to 15A for 14 AWG, 20A for 12 AWG, and 30A for 10 AWG copper wire under most conditions.