Nec Cable Ampacity: aluminum
2000 kcmil to 310.15B17#12 AWG
NEC (NFPA 70) cable ampacity ratings — allowable current for copper and aluminum conductors at 60/75/90°C insulation ratings in raceways and free air; high-temperature conductor ampacity at 150/200/250°C; ambient temperature correction factors; conductor fill adjustment factors
| conductor material | conductor size | ampacity 60C (A) | ampacity 75C (A) | ampacity 90C (A) | installation | nec table | standard |
|---|---|---|---|---|---|---|---|
| aluminum | 2000 kcmil | 470 | 560 | 630 | — | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 250 kcmil | 170 | 205 | 230 | — | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 3 AWG | 65 | 75 | 85 | — | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 3/0 AWG | 130 | 155 | 175 | — | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 300 kcmil | 195 | 230 | 260 | — | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 310.15B17#1 AWG | 130 | 155 | 175 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#1/0 AWG | 150 | 180 | 205 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#10 AWG | 35 | 40 | 45 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#1000 kcmil | 625 | 750 | 845 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#12 AWG | 25 | 30 | 35 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
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