Allowable Ampacities of Not More than Three Insulated Conductors

Rated 0-2000 Volts, 60° To 90°C (140° TO 194°F), In Raceway or Cable or Earth (Directly Buried)
Based on ambient air temperature of 30°C (86°F). 

Size Temperature Rating of Conductor
  60°C
(140°F)		 75°C
(167°F)		 90°C
(194°)
AWG
kcmil		 Types: TW*, UF Types: FEPW*, RH*, RHW*, THHW*, THW*, THWN*, XHHW*, USE*, ZQ* Types: TA, TBS, SA, SIS, FEP*, FEPB*, MI, RHH*, RHW-2, THHN*, THHW*, THW-2, THWN-2, USE-2, XHH, XHHW*, XHHW-2, ZW-2
  Copper
18
16
14
12
10
8		 --
--
20*
25
30
40		 --
--
20*
25*
35*
50		 14
18
25*
30*
40*
55
6
4
3
2
1		 55
70
85
95
110		 65
85
100
115
130		 75
95
110
130
150
1/0
2/0
3/0
4/0		 125
145
165
195		 150
175
200
230		 170
195
225
260
250
300
350
400
500		 215
240
260
280
320		 255
285
310
335
380		 290
320
350
380
430
600
700
750
800
900		 355
385
400
410
435		 420
460
475
490
520		 475
520
535
555
585
1000
1250
1500
1750
2000		 455
495
520
545
560		 545
590
625
650
665		 615
665
705
735
750

Size Temperature Rating of Conductor
  60°C
(140°F)		 75°C
(167°F)		 90°C
(194°)
AWG
kcmil		 Types: TW*, UF* Types: RH*, RHW*, THHW*, THW*, THWN*, XHHW*, USE* Types: TA, TBS, SA, SIS, THHN*, THHW*, THW-2, THWN-2, RHH*, RHW-2, USE-2, XHH, XHHW, XHHW-2, ZW-2
  Aluminum or Copper-Clad Aluminum
--
--
--
12
10
8		 --
--
--
20*
25
30		 --
--
--
20*
30*
40		 --
--
--
25*
35*
45
6
4
3
2
1		 40
55
65
75
85		 50
65
75
90
100		 60
75
85
100
115
1/0
2/0
3/0
4/0		 100
115
130
150		 120
135
155
180		 135
150
175
205
250
300
350
400
500		 170
190
210
225
260		 205
230
250
270
310		 230
255
280
305
350
600
700
750
800
900		 285
310
320
330
355		 340
375
385
395
425		 385
420
435
450
480
1000
1250
1500
1750
2000		 375
405
435
455
470		 445
485
520
545
560		 500
545
585
615
630

*Unless otherwise specifically permitted elsewhere in this Code, the overcurrent protection for conductor types marked with and asterisk (*) shall not exceed 15 amperes for No. 14, 20 amperes for No. 12, and 30 amperes for No. 10 copper; or 15 amperes for 15 amperes for No. 12 and 25 amperes for No. 10 aluminum and copper-clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.

Table 310-16 NEC

The information presented within this section has been carefully prepared and is believed to be accurate. Alan Wire Company makes no warranties, expressed or implied, and disclaim any responsibility or liability for loss or damage as a result of the use of this information.