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Conductor Fill
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Porcupine Labor Press




 

 

Maximum Number of Conductors in
Electrical Metalic Tubing

Type

Conductor

Trade Size (in.)

THHN,
THWN,
THWN-2

Size
(AWG /
kcmil)

1

1

1

2

2

3

3

4

14
12
10
8
12
9
5
3
22
16
10
6
35
26
16
9
61
45
28
16
84
61
38
22
138
101
63
36
241
176
111
64
364
266
167
96
476
347
219
126
608
443
279
161

6
4
3
2
1

2
1
1
1
1

4
2
1
1
1

7
4
3
3
1

12
7
6
5
4

16
10
8
7
5

26
16
13
11
8

46
28
24
20
15

69
43
36
30
22

91
56
47
40
29

116
71
60
51
37

1/0
2/0
3/0
4/0
250

1
0
0
0
0

1
1
1
1
0

1
1
1
1
1

3
2
1
1
1

4
3
3
2
1

7
6
5
4
3

12
10
8
7
6

19
16
13
11
9

25
20
17
14
11

32
26
22
18
15

300
350
400
500
600

0
0
0
0
0

0
0
0
0
0

1
1
0
0
0

1
1
1
1
1

1
1
1
1
1

3
2
1
1
1

5
4
4
3
2

7
6
6
5
4

10
9
8
6
5

13
11
10
8
7

700
750
800
900
1000

0
0
0
0
0

0
0
0
0
0

0
0
0
0
0

1
0
0
0
0

1
1
1
1
1

1
1
1
1
1

2
1
1
1
1

3
3
3
3
2

4
4
4
3
3

6
5
5
4
4

 

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