ISO 9001:2008ISO 9001
Certified
A POWERFUL SOLUTION
Allowable Ampacities of Insulated Conductors
Rated Up to and Including 2000 Volts, 60°C through 90°C (140°F through 194°F).
Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried).
Based on Ambient Temperature of 30°C (86°F).
NEC table 310

Conductor
Size
(AWG/KCMIL)
60°C/140°F

TW, UF
75°C/167°F

RHW, THHW, THW, THWN, XHHW, USE, ZW
90°C/194°F

TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2, THHN, THHW, THW-2, THWN-2, XHH, XHHW, XHHW-2, USE-2, ZW
- - - -
- - - -
- - - -
12* 15 20 25
10* 25 30 35
8 35 40 45
6 40 50 55
4 55 65 75
3 65 75 85
2 75 90 100
1 85 100 115
1/0 100 120 135
2/0 115 135 150
3/0 130 155 175
4/0 150 180 205
250 170 205 230
300 195 230 260
350 210 250 280
400 225 270 305
500 260 310 350
600 285 340 385
700 315 375 425
750 320 385 435
800 330 395 445
900 355 425 480
1000 375 445 500

* Small Conductors. Unless specifically permitted in 240.4(E) through (G), the overcurrent protection shall not exceed
 15 amperes for 14 AWG, 20 amperes for 12 AWG, and 30 amperes for 10 AWG copper; or 15 amperes for 12 AWG
 and 25 amperes for 10 AWG aluminum and copper-clad aluminum after any correction factors for ambient temperature
 and number of conductors have been applied.
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