Appendix, Nec wire gauge chart – Liebert UPStation S VM18000 User Manual
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APPENDIX
NEC Wire Gauge Chart
Allowable Ampacities of Insulated Conductors Rated 0 – 2000 Volts, 60° to 90°C (140° to 194°F), not more than three
conductors in Raceway or Cable or Earth (Directly Buried), Based on Ambient Temperature of 30°C (86°F)
*Unless otherwise specifically permitted elsewhere in this Code the overcurrent protection for conductor types marked with
an 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 No.12 and 25 amperes No. 10 aluminum and copper-clad aluminum after any correction factors for ambient
temperature and number of conductors have been applied.
Reprinted with permission from NFPA 70-1996, the National Electrical Code ®, Copyright 1995, National Fire Protection
Association, Quincy, MA 02269. This reprinted material is not the complete and official position of the National Fire
Protection Association on the referenced subject which is represented only by the standard in its entirety.
Size
Temperature Rating of Conductor
Size
60 C° (140°F)
75°C (167°F)
90°C (194°F)
60°C (140°F)
75°C (167°F)
90°C (194°F)
Types: TW*, UF*
Types: FEPW*,
RH*, RHW*,
THHW*, THW*,
THWN*, XHHW*,
USE*, ZW*
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
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
AWG kcmll
Copper
Aluminum or Copper-Clad Aluminum
AWG kcmll
18
-
-
14
-
-
-
-
16
-
-
18
-
-
-
-
14
20*
20*
25*
-
-
-
-
12
25*
25*
30*
20*
20*
25*
12
10
30
35*
40*
25
30*
35*
10
8
40
50
55
30
40
45
8
6
55
65
75
40
50
60
6
4
70
85
95
55
65
75
4
3
85
100
110
65
75
85
3
2
95
115
130
75
90
100
2
1
110
130
150
85
100
115
1
1/0
125
150
170
100
120
135
1/0
2/0
145
175
195
115
135
150
2/0
3/0
165
200
225
130
155
175
3/0
4/0
195
230
260
150
180
205
4/0
250
215
255
290
170
205
230
250
300
240
285
320
190
230
255
300
350
260
310
350
210
250
280
350
400
280
335
280
225
270
305
400
500
320
380
430
260
310
350
500
600
355
420
475
285
340
385
600
700
385
460
520
310
275
420
700
750
400
475
535
320
385
435
750
800
410
490
555
330
395
450
800
900
435
520
585
355
425
480
900
1000
455
545
615
375
445
500
1000
1250
495
590
665
405
485
545
1250
1500
520
625
705
435
520
585
1500
1750
545
650
735
455
545
615
1750
2000
560
665
750
470
560
630
2000
CORRECTION FACTORS
Ambient Temp.
°C
For ambient temperatures other than 30° (86° F), multiply the allowable ampacities shown above by the appropriate factor shown
below.
Ambient Temp. °C
21-25
1.08
1.05
1.04
1.08
1.05
1.04
70-77
26-30
1.00
1.00
1.00
1.00
1.00
1.00
78-86
31-35
.91
.94
.96
.91
.94
.96
87-95
36-40
.82
.88
.91
.82
.88
.91
96-104
41-45
.71
.82
.87
.71
.82
.87
105-113
46-50
.58
.75
.82
.58
.75
.82
114-122
51-55
.41
.67
.76
.41
.67
.76
123-131
56-60
-
.58
.71
-
.58
.71
132-140
61-70
-
.33
.58
-
.33
.58
141-158
71-80
-
-
.41
-
-
.41
159-176