Ampacity per NFPA 79 Table 12.5.1 (abbreviated)
CONDUCTOR SIZE
AMPACITY
AWG / kcmil
60° C (140 °F)
75 °C (167 °F)
90 °C (194 °F)
30 28 26 24 22 20 18 16 14 12 10
- - -
0.5 0.8
0.5 0.8
1 2 3 5 7
1 2 3 5
2 3 5 7
14 18 25 30 40 55 75 95
10 15 20 30 40 55 70 85 95
10 20 25 35 50 65 85
8 6 4 3 2 1
100 115 130 150 175 200 230 255 385 310 335 380
110 130 145 170 195 225 260 290 320 350 380 430
110 125 145 165 195 215 240 260 280 320
1/0 2/0 3/0 4/0 250 300 350 400 500
Notes: (1) Conductor types listed in section 12.3.1 NFPA 79 shall be permitted to be used at the ampacities listed in this table (2) The sources for ampacities in this table is table 310.15(B)(16) / 310.16 of NFPA 70 (NEC) (3) Kabelschlepp is not responsible for errors or conformity of these values with their references. Please refer to the original NFPA 79 document in its most current edition.
Correction factors
Based on table 12.5.5(a) Ambient Temperature Correction Factors. For ambient temperatures other than 30 °C (86 °F), multiply the allowable ampacity by the appropriate factor shown in the table:
Ambient Temperature
Correction Factor 60 °C
Correction Factor 75 °C
Correction Factor 90 °C
21-25 26-30 31-35 36-40 41-45 46-50 51-55 56-60 61-70 71-80
1.08 1.00 0.91 0.82 0.71 0.58 0.41
1.05 1.00 0.94 0.88 0.82 0.75 0.67 0.58 0.33
1.04
1
0.96 0.91 0.87 0.82 0.76 0.71 0.58 0.41
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