Nec Cable Ampacity: aluminum
310.15B17#350 kcmil to 310.15B17#8 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 | 310.15B17#350 kcmil | 330 | 395 | 445 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#4 AWG | 80 | 100 | 115 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#4/0 AWG | 235 | 280 | 315 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#400 kcmil | 355 | 425 | 480 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#500 kcmil | 405 | 485 | 545 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#6 AWG | 60 | 75 | 85 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#600 kcmil | 455 | 545 | 615 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#700 kcmil | 500 | 595 | 670 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#750 kcmil | 515 | 620 | 700 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
| aluminum | 310.15B17#8 AWG | 45 | 55 | 60 | free air | 310.15(B)(17) | NEC (NFPA 70) 2017 Edition Table 310.15(B)(17) |
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