23
OPM-147/C
WIRING SIZE TABLE
The table below is based on Table 310.15 (B) (16) in the National Electric Code 2014 edition. Allowable ampacitier of insulated conductors rated 0 through
2000V, 75°C through 90°C. Not more than three current-carrying conductors in Raceway, Cable, or Earth (direct buried). Adjust for 40°C (104°F) ambient
temperature.
Copper
75°C
Copper
90°C
Aluminum
Copper Clad
Aluminum
75°C
Aluminum
Copper Clad Aluminum
90°
Wire Type:
RHW, THHW, THW,
THWN, XHHW, USE,
ZW
Wire Type:
TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2,
THHN, THHW, THW-2, XHH, XHHW, XHHW-
2, ZW-2
SIZE
AWG
OR
KCMIL
Wire Type:
RHW, THHW, THW,
THWN, XHHW, USE
Wire Type:
TBS, SA, SIS, THHN, THW-2, THWN-2,
RHH, RHW-2, USE-2, XHH, XHHW,
XHHW-2, ZW-2
50
65
85
100
115
130
150
175
200
230
255
285
310
335
380
420
460
475
490
520
545
590
625
650
655
55
75
95
115
130
145
170
195
225
260
290
320
350
380
430
475
520
535
555
585
615
665
705
735
750
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
300
350
400
500
600
700
750
800
900
1000
1250
1500
1750
2000
40
50
65
75
90
100
120
135
155
180
205
230
250
270
310
340
375
385
395
425
445
485
520
545
560
45
55
75
85
100
115
135
150
175
205
230
260
280
305
350
385
425
435
445
480
500
545
585
615
630
For additional information, see table 310.15 of the National Electric Code.
