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
18 - - 14
16 - - 18
14* 15 20 25
12* 20 25 30
10* 30 35 40
8 40 50 55
6 55 65 75
4 70 85 95
3 85 100 115
2 95 115 130
1 110 130 145
1/0 125 150 170
2/0 145 175 195
3/0 165 200 225
4/0 195 230 260
250 215 255 290
300 240 285 320
350 260 310 350
400 280 335 380
500 320 380 430
600 350 420 475
700 385 460 520
750 400 475 535
800 410 490 555
900 435 520 585
1000 455 545 615

* 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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