AMPACITIES OF NOT MORE THAN 3 INSULATED CONDUCTORS RATED 0-2, 000 VOLTS IN RACEWAY OR CABLE
I N RACEWAY, CABLE, OR EARTH BASED CN AMBIENT TEMPERATURE OF 30°C (86°F)
SIZE 60°C (140°F) 75°C (167°F) 90°C (194°F)
AWG
kcmil		 TYPES
TW,
UF		 TYPES
RHW,
THHW,
THW,
THWN,
XHHW,
USE,
ZW		 TYPES
TBS, SA, SIS.
FEP, FEPB, Ml,
RHH, RHW-2.
THHN, THHW.
THW-2.THWN-2.
USE-2 XHH.
XHHW, XHHW-2,
ZW-2
14*
12*
10*
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
300
350
400
500		 20
25
30
40
55
70
85
95
110
125
145
165
195
215
240
260
280
320		 20
25
35
50
65
85
100
115
130
150
175
200
230
255
285
310
335
380		 25
30
40
55
75
95
110
130
150
170
195
225
260
290
320
350
380
430
Overcurrent protection for conductor sizes marked (') shall not exceed 15 amperes for No. 14, 20 amperes for No, 12. and 30 amperes for No. 10 copper. See NEC 240-2 for motor & welders overcurrent protection exceptions. See NEC 240.



MAXIMUM NUMBER OF CONDUCTORS IN ELECTRICAL METALLIC TUBING
   Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 8
6
5
2		 15
11
8
5		 25
19
14
8		 43
33
24
13		 58
45
33
18		 96
74
55
30		 168
129
96
53		 254
195
145
81		 332
255
190
105		 424
326
243
135
RHH*, RHW*
RHW-2*		 14
12
10
8		 6
4
3
1		 10
8
6
4		 18
13
10
6		 28
23
18
10		 39
31
24
14		 64
51
40
24		 112
90
70
42		 169
136
106
63		 221
177
138
83		 282
227
177
106
RHH*, RHW*
RHW-2*, TW.
THW, THHW
THW-2
 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
1
0
0
0
0		 3
1
1
1
1
1
1
1
0		 4
3
3
2
2
1
1
1
1		 8
6
5
4
3
2
1
1
1		 11
8
7
6
4
3
3
2
1		 18
13
12
10
7
6
5
4
3		 32
24
20
17
12
10
9
7
6		 48
36
31
26
18
16
13
11
9		 63
47
40
34
24
20
17
15
12		 81
60
52
44
31
26
22
19
16
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 12
9
5
3
2
1
1
1
1
1
0
0		 22
16
10
6
4
2
1
1
1
1
1
1		 35
26
16
9
7
4
3
3
1
1
1
1		 61
45
28
16
12
7
6
5
4
3
2
1		 84
61
38
22
16
10
8
7
5
4
3
3		 138
101
63
36
26
16
13
11
8
7
6
5		 241
176
111
64
46
28
24
20
15
12
10
8		 364
266
167
96
69
43
36
30
22
19
16
13		 476
347
219
126
91
56
47
40
29
25
20
17		 608
443
279
161
116
71
60
51
37
32
26
22



MAXIMUM NUMBER OF CONDUCTORS IN RIGID PVC CONDUIT, SCHEDULE 40
   Trade Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 8
6
4
2		 14
11
8
4		 24
18
13
7		 42
32
24
13		 57
44
32
18		 94
72
54
30		 135
103
77
43		 209
160
119
66		 230
115
160
89		 361
277
206
115
RHH*, RHW*
RHW-2*		 14
12
10
8		 5
4
3
1		 9
8
6
3		 16
12
10
6		 28
22
17
10		 38
30
24
14		 63
50
39
23		 90
72
56
33		 139
112
87
52		 186
150
117
70		 240
193
150
90
TW, THW,
THHW, THW-2		 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
0
0
0
0
0		 2
1
1
1
1
1
1
1
0		 4
3
3
2
1
1
1
1
1		 8
6
5
4
3
2
1
1
1		 11
8
7
6
4
3
3
2
1		 13
13
11
10
7
6
5
4
3		 26
19
16
14
10
8
7
6
5		 40
30
25
22
15
13
11
9
8		 53
40
34
29
20
17
15
12
10		 69
51
44
37
26
22
19
16
13
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 11
8
5
3
1
1
1
1
1
1
0
0		 21
15
9
5
4
2
1
1
1
1
1
1		 34
25
15
9
6
4
3
3
1
1
1
1		 60
43
27
16
11
7
6
5
3
3
2
1		 82
59
37
21
15
9
8
7
5
4
3
3		 135
99
62
36
26
16
13
11
8
7
6
5		 193
141
89
51
37
22
19
16
12
10
8
7		 299
218
137
79
57
35
30
25
18
15
13
11		 401
293
184
106
77
47
40
33
24
21
17
14		 517
377
238
137
99
61
51
43
32
27
22
18



MAXIMUM NUMBER OF CONDUCTORS IN RIGID PVC CONDUIT, SCHEDULE 80
   Trade Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 8
5
3
1		 11
9
6
3		 20
15
11
6		 35
27
20
11		 49
38
28
15		 82
63
47
26		 118
91
67
37		 185
142
106
59		 250
192
143
79		 324
248
185
103
RHH*, RHW*
RHW-2*		 14
12
10
8		 4
3
2
1		 8
6
5
3		 13
10
8
5		 23
19
15
9		 32
26
20
12		 55
44
34
20		 79
63
49
29		 123
99
77
46		 166
133
104
62		 215
173
135
81
RHH*, RHW
RHW-2, TW,
THW, THHW,
THW-2		 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
0
0
0
0
0		 1
1
1
1
1
1
1
0
0		 3
3
2
1
1
1
1
1
1		 7
5
4
3
2
1
1
1
1		 9
7
6
5
3
3
3
2
1		 16
12
10
8
6
5
4
3
3		 22
17
14
12
8
7
6
5
4		 35
26
22
19
13
11
10
8
7		 48
35
30
26
18
15
13
11
9		 62
46
39
33
23
20
17
14
12
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 9
6
4
2
1
1
1
1
0
0
0
0		 17
12
7
4
3
1
1
1
1
1
1
1		 28
20
13
7
5
3
3
2
1
1
1
1		 51
37
23
13
9
6
5
4
3
2
1
1		 70
51
32
18
13
8
7
6
4
3
3
2		 118
86
54
31
22
14
12
10
7
6
5
4		 170
124
78
45
32
20
17
14
10
9
7
6		 265
193
122
70
51
31
26
22
16
14
11
9		 358
261
164
95
68
42
35
30
22
18
15
13		 464
538
213
123
89
54
46
39
29
24
20
17



MAXIMUM NUMBER OF CONDUCTORS IN RIGID METAL CONDUIT
   Trade Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 9
7
5
3		 15
12
9
5		 25
19
14
8		 44
33
25
14		 59
45
34
19		 98
75
56
31		 140
107
80
44		 216
165
123
68		 288
221
164
91		 370
284
212
118
RHH*, RHW*
RHW-2*		 14
12
10
8		 6
5
3
1		 10
8
6
4		 17
13
10
6		 29
23
18
11		 39
32
25
15		 65
52
41
24		 93
75
58
35		 143
115
90
54		 191
154
120
72		 246
198
154
92
RHH*, RHW
RHW-2, TW,
THW, THHW,
THW-2		 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
1
0
0
0
0		 3
1
1
1
1
1
1
1
0		 5
3
3
2
1
1
1
1
1		 8
6
5
4
3
2
2
1
1		 11
8
7
6
4
3
3
2
1		 18
14
12
10
7
6
5
4
3		 27
20
17
14
10
8
7
6
5		 41
31
26
22
15
13
11
9
8		 55
41
35
30
21
18
15
13
10		 71
53
45
38
27
23
19
16
14
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 13
9
6
3
2
1
1
1
1
1
0
0		 22
16
10
6
4
2
1
1
1
1
1
1		 36
26
17
9
7
4
3
3
1
1
1
1		 63
46
29
16
12
7
6
5
4
3
2
1		 85
62
39
22
16
10
8
7
5
4
3
3		 140
102
64
37
27
16
14
11
8
7
6
5		 200
146
92
53
38
23
20
17
12
10
8
7		 309
225
142
82
59
36
31
26
19
16
13
11		 412
301
189
109
79
48
41
34
25
21
18
15		 531
387
244
140
101
62
53
44
33
27
23
19



MAXIMUM NUMBER OF CONDUCTORS IN FLEXIBLE METAL CONDUIT
   Trade Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 9
7
5
3		 15
11
8
5		 23
18
13
7		 36
28
21
11		 53
41
30
17		 94
72
54
30		 141
108
81
45		 203
156
116
64		 277
212
158
88		 361
277
207
115
RHH*, RHW*
RHW-2*		 14
12
10
8		 6
5
4
1		 10
8
6
4		 15
12
10
6		 24
19
15
9		 35
28
22
13		 62
50
39
23		 94
75
59
35		 135
108
85
51		 184
148
115
69		 240
193
151
90
RHH*, RHW
RHW-2, TW,
THW, THHW,
THW-2		 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
1
0
0
0
0		 3
1
1
1
1
1
1
1
0		 4
3
3
2
1
1
1
1
1		 7
5
4
4
2
1
1
1
1		 10
7
6
5
4
3
3
2
1		 18
13
11
10
7
6
5
4
3		 27
20
17
14
10
9
7
6
5		 39
29
25
21
15
12
10
9
7		 53
39
34
29
20
17
14
12
10		 69
51
44
37
26
22
19
16
13
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 13
9
6
3
2
1
1
1
1
1
0
0		 22
16
10
6
4
2
1
1
1
1
1
1		 33
24
15
9
6
4
3
3
1
1
1
1		 52
38
24
14
10
6
5
4
3
2
1
1		 76
56
35
20
14
9
7
6
4
4
3
2		 134
98
62
35
25
16
13
11
8
7
6
5		 202
147
93
53
38
24
20
17
12
10
9
7		 291
212
134
77
55
34
29
24
18
15
12
10		 396
289
182
105
76
46
39
33
24
20
17
14		 518
378
238
137
99
61
51
43
32
27
22
18



MAXIMUM NUMBER OF CONDUCTORS IN LIQUIDTIGHT FLEXIBLE METAL CONDUIT
   Trade Sizes In Inches
Type
Letters		 Cond. Size
AWG/kcmil		 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
TW,
THHW,
THW,
THW-2		 14
12
10
8		 9
7
5
3		 15
12
9
5		 25
19
14
8		 44
33
25
14		 57
43
32
18		 93
71
53
29		 140
108
80
44		 215
165
123
68		 280
215
160
89		 365
280
209
116
RHH*, RHW*
RHW-2*		 14
12
10
8		 6
5
3
1		 10
8
6
4		 16
13
10
6		 29
23
18
11		 38
30
23
14		 62
50
39
23		 93
75
58
35		 143
115
89
53		 186
149
117
70		 243
195
152
91
RHH*, RHW
RHW-2, TW,
THW, THHW,
THW-2		 6
4
3
2
1
1/0
2/0
3/0
4/0		 1
1
1
1
1
0
0
0
0		 3
1
1
1
1
1
1
1
0		 5
3
3
2
1
1
1
1
1		 8
6
5
4
3
2
2
1
1		 11
8
7
6
4
3
3
2
1		 18
13
11
9
7
6
5
4
3		 27
20
17
14
10
8
7
6
5		 41
30
26
22
15
13
11
9
8		 53
40
34
29
20
17
15
12
10		 70
52
44
38
26
23
19
16
13
THHN,
THWN,
THWN-2		 14
12
10
8
6
4
3
2
1
1/0
2/0
3/0		 13
9
6
3
2
1
1
1
1
1
0
0		 22
16
10
6
4
2
1
1
1
1
1
1		 36
26
16
9
7
4
3
3
1
1
1
1		 63
46
29
16
12
7
6
5
4
3
2
1		 81
59
37
21
15
9
8
7
5
4
3
3		 133
97
61
35
25
15
13
11
8
7
6
5		 201
146
92
53
38
23
20
17
12
10
8
7		 308
225
141
81
59
36
30
26
19
16
13
11		 401
292
184
106
76
47
40
33
25
21
17
14		 523
381
240
138
100
61
52
44
32
27
23
19



MINIMUM SIZE EQUIPMENT GROUNDING CONDUCTORS FOR GROUNDING RACEWAY AND EQUIPMENT

RATING OR SETTING OF AUTOMATIC OVERCURRENT DEVICE IN CIRCUIT AHEAD OF EQUIPMENT, CONDUIT. ETC.. NOT EXCEEDING (AMPERES) SIZE

COPPER
15
20
30
40
60
100
200
300
400
500		 14
12
10
10
10
8
6
4
3
2



GROUNDING ELECTRODE CONDUCTOR FOR ALTERNATING-CURRENT SYSTEMS

SIZE OF LARGEST UNGROUNDED SERVICEENTRANCE CONDUCTOR OR EQUIVALENT AREA FOR PARALLEL CONDUCTORS* SIZE OF GROUNDING ELECTRODE CONDUCTOR
COPPER COPPER
2 OR SMALLER
1 OR 1/0
2/0 OR 3/0
OVER 3/0 THRU
350kcmil
OVER 350 kcmil
THRU 600 kcmil
OVER 600 kcmil
THRU 1100 kcmil
OVER 1100 kcmil		 8
6
4

2

1/0

2/0
3/0