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Nec Cable Ampacity: aluminum
4 AWG to 800 kcmil
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) | nec table | standard |
|---|---|---|---|---|---|---|
| aluminum | 4 AWG | 55 | 65 | 75 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 4/0 AWG | 150 | 180 | 205 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 400 kcmil | 225 | 270 | 305 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 500 kcmil | 260 | 310 | 350 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 6 AWG | 40 | 50 | 55 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 600 kcmil | 285 | 340 | 385 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 700 kcmil | 315 | 375 | 425 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 750 kcmil | 320 | 385 | 435 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 8 AWG | 35 | 40 | 45 | 310.16 | NEC (NFPA 70) Table 310.16 |
| aluminum | 800 kcmil | 330 | 395 | 445 | 310.16 | NEC (NFPA 70) Table 310.16 |
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