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// CODE SNIPPET

E3904.6 Conduit and Tubing Fill

2014 FBC - Residential, 5th edition > 39 Power and Lighting Distribution > E3904 General Installation Requirements > E3904.6 Conduit and Tubing Fill
JUMP TO FULL CODE CHAPTER

The maximum number of conductors installed in conduit or tubing shall be in accordance with Tables E3904.6(1) through E3904.6(10).

TABLE E3904.6(1)
MAXIMUM NUMBER OF CONDUCTORS IN ELECTRICAL METALLIC TUBING (EMT)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		4
3
2
1
1
1
1
1
0
0
0
0
0		7
6
5
2
1
1
1
1
1
1
1
0
0		11
9
8
4
3
2
1
1
1
1
1
1
1		20
17
13
7
5
4
4
3
1
1
1
1
1		27
23
18
9
8
6
5
4
3
2
2
1
1		46
38
30
16
13
10
9
7
5
4
4
3
3
TW14
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
RHWa, RHW-2a, THHW,
THW, THW-2		14
12
10
8		6
4
3
1		10
8
6
4		16
13
10
6		28
23
18
10		39
31
24
14		64
51
40
24
RHWa, RHW-2a, 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		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
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		12
9
5
3
2
1
1
1
1
1
0
0
0		22
16
10
6
4
2
1
1
1
1
1
1
1		35
26
16
9
7
4
3
3
1
1
1
1
1		61
45
28
16
12
7
6
5
4
3
2
1
1		84
61
38
22
16
10
8
7
5
4
3
3
2		138
101
63
36
26
16
13
11
8
7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		8
6
5
2
1
1
1
1
1
1
0
0
0		15
11
8
5
3
2
1
1
1
1
1
1
1		25
19
14
8
6
4
3
3
1
1
1
1
1		43
33
24
13
10
7
6
5
4
3
2
1
1		58
45
33
18
14
10
8
7
5
4
3
3
2		96
74
55
30
22
16
14
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(2)
MAXIMUM NUMBER OF CONDUCTORS IN ELECTRICAL NONMETALLIC TUBING (ENT)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0		3
2
1
1
1
1
1
0
0
0
0		6
5
4
1
1
1
1
1
1
0
0		10
9
7
3
3
2
1
1
1
1
1		19
16
13
6
5
4
3
3
1
1
1		26
22
17
9
7
6
5
4
3
2
1		43
36
29
15
12
9
8
7
5
4
3
RHW, RHW-23/0
4/0		0
0		0
0		1
1		1
1		1
1		3
2
TW14
12
10
8		7
5
4
1		13
10
7
4		22
17
13
7		40
31
23
13		55
42
32
17		92
71
52
29
RHWa, RHW-2a, THHW,
THW, THW-2		14
12
10
8		4
3
3
1		8
7
5
3		15
12
9
5		27
21
17
10		37
29
23
14		61
49
38
23
RHWa, RHW-2a, 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
0
0		4
3
2
2
1
1
1
1
1		7
5
5
4
3
2
1
1
1		10
8
7
6
4
3
3
2
1		17
13
11
9
6
5
5
4
3
THHN, THWN, THWN-214
12
10
8
6
4
3
2		10
7
4
2
1
1
1
1		18
13
8
5
3
1
1
1		32
23
15
8
6
4
3
2		58
42
26
15
11
7
5
5		80
58
36
21
15
9
8
6		132
96
60
35
25
15
13
11
THHN, THWN, THWN-21
1/0
2/0
3/0
4/0		1
0
0
0
0		1
1
1
1
0		1
1
1
1
1		3
3
2
1
1		5
4
3
3
2		8
7
5
4
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		7
5
4
1
1
1
1
1
1
0
0
0
0		13
10
7
4
3
1
1
1
1
1
1
1
0		22
17
13
7
5
4
3
2
1
1
1
1
1		40
31
23
13
9
7
6
5
3
3
2
1
1		55
42
32
17
13
9
8
6
5
4
3
3
2		92
71
52
29
21
15
13
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(3)
MAXIMUM NUMBER OF CONDUCTORS IN FLEXIBLE METALLIC CONDUIT (FMC)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3		4
3
3
1
1
1
1		7
6
5
2
1
1
1		11
9
7
4
3
2
1		17
14
11
6
5
4
3		25
21
17
9
7
5
5		44
37
30
15
12
10
7
RHW, RHW-22
1
1/0
2/0
3/0		1
0
0
0
0		1
1
1
1
0		1
1
1
1
1		3
1
1
1
1		4
2
2
1
1		7
5
4
3
3
TW14
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
RHWa, RHW-2a, THHW,
THW, THW-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
RHWa, RHW-2a, TW, THW,
THHW, THW-2		6
4
3
2
1
1/0
2/0
3/0
4/0
4/0		1
1
1
1
1
0
0
0
0
0		3
1
1
1
1
1
1
1
0
0		4
3
3
2
1
1
1
1
1
1		7
5
4
4
2
1
1
1
1
1		10
7
6
5
4
3
3
2
1
1		18
13
11
10
7
6
5
4
3
2
THHN, THWN, THWN-214
12
10
8		13
9
6
3		22
16
10
6		33
24
15
9		52
38
24
14		76
56
35
20		134
98
62
35
THHN, THWN, THWN-26
4
3
2
1
1/0
2/0
3/0
4/0		2
1
1
1
1
1
0
0
0		4
2
1
1
1
1
1
1
1		6
4
3
3
1
1
1
1
1		10
6
5
4
3
2
1
1
1		14
9
7
6
4
4
3
2
1		25
16
13
11
8
7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		9
7
5
3
1
1
1
1
1
1
0
0
0		15
11
8
5
3
2
1
1
1
1
1
1
1		23
18
13
7
5
4
3
3
1
1
1
1
1		36
28
21
11
8
6
5
4
3
2
2
1
1		53
41
30
17
12
9
7
6
5
4
3
3
2		94
72
54
30
22
16
13
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(4)
MAXIMUM NUMBER OF CONDUCTORS IN INTERMEDIATE METALLIC CONDUIT (IMC)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		4
4
3
1
1
1
1
1
0
0
0
0
0		8
6
5
3
1
1
1
1
1
1
1
0
0		13
11
8
4
3
3
2
1
1
1
1
1
1		22
18
15
8
6
5
4
3
2
1
1
1
1		30
25
20
10
8
6
6
5
3
3
2
1
1		49
41
33
17
14
11
9
8
5
4
4
3
3
TW14
12
10
8		10
7
5
3		17
13
9
5		27
21
15
8		47
36
27
15		64
49
36
20		104
80
59
33
RHWa, RHW-2a, THHW,
THW, THW-2		14
12
10
8		6
5
4
2		11
9
7
4		18
14
11
7		31
25
19
12		42
34
26
16		69
56
43
26
RHWa, RHW-2a, TW, THW,
THHW, THW-2		6
4
3
2
1
1/0
2/0
3/0
4/0		1
1
1
1
1
1
0
0
0		3
2
1
1
1
1
1
1
1		5
4
3
3
1
1
1
1
1		9
6
6
5
3
3
2
1
1		12
9
8
6
4
4
3
3
2		20
15
13
11
7
6
5
4
4
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1
1/0
2/0		14
10
6
3
2
1
1
1
1
1
1		24
17
11
6
4
3
2
1
1
1
1		39
29
18
10
7
4
4
3
2
1
1		68
49
31
18
13
8
6
5
4
3
3		91
67
42
24
17
10
9
7
5
4
4		149
109
68
39
28
17
15
12
9
8
6
THHN, THWN, THWN-23/0
2/0		0
0		1
1		1
1		2
1		3
2		5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		10
7
5
3
1
1
1
1
1
1
1
0
0		17
13
9
5
4
3
2
1
1
1
1
1
1		27
21
15
8
6
4
4
3
2
1
1
1
1		47
36
27
15
11
8
7
5
4
3
3
2
1		64
49
36
20
15
11
9
7
5
5
4
3
2		104
80
59
33
24
18
15
12
9
8
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(5)
MAXIMUM NUMBER OF CONDUCTORS IN LIQUID-TIGHT FLEXIBLE NONMETALLIC CONDUIT (FNMC-B)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
3/81/23/4111/411/22
RHW, RHW-214
12
10
8
6
4		2
1
1
1
1
0		4
3
3
1
1
1		7
6
5
2
1
1		12
10
8
4
3
2		21
17
14
7
6
4		27
22
18
9
7
6		44
36
29
1
12
9
RHW, RHW-23
2
1
1/0
2/0
3/0
4/0		0
0
0
0
0
0
0		1
1
0
0
0
0
0		1
1
1
1
1
0
0		1
1
1
1
1
1
1		4
3
1
1
1
1
1		5
4
3
2
1
1
1		8
7
5
4
3
3
2
TW14
12
10
8		5
4
3
1		9
7
5
3		15
12
9
5		25
19
14
8		44
33
25
14		57
43
32
18		93
71
53
29
RHWa, RGW-2a, THHW,
THW, THW-2		14
12
10
8		3
3
1
1		6
5
3
1		10
8
6
4		16
13
10
6		29
23
18
11		38
30
23
14		62
50
39
23
RHWa, RHW-2a, TW,
THW, THHW, THW-2		6
4
3
2
1
1/0
2/0
3/0
4/0		1
1
1
0
0
0
0
0
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
THHN, THWN, THWN-214
12
10
8		8
5
3
1		13
9
6
3		22
16
10
6		36
26
16
9		63
46
29
16		81
59
37
21		133
97
61
35
THHN, THWN, THWN-26
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
0
0
0		4
2
1
1
1
1
1
1
1		7
4
3
3
1
1
1
1
1		12
7
6
5
4
3
2
1
1		15
9
8
7
5
4
3
3
2		25
15
13
11
8
7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		5
4
3
1
1
1
1
1
0
0
0
0
0		9
7
5
3
1
1
1
1
1
1
0
0
0		15
12
9
5
3
2
1
1
1
1
1
1
1		25
19
14
8
6
4
3
3
1
1
1
1
1		44
33
25
14
10
7
6
5
4
3
2
1
1		57
43
32
18
13
9
8
7
5
4
3
3
2		93
71
53
29
22
16
13
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(6)
MAXIMUM NUMBER OF CONDUCTORS IN LIQUID-TIGHT FLEXIBLE NONMETALLIC CONDUIT (FNMC-A)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
3/81/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		2
1
1
1
1
0
0
0
0
0
0
0
0		4
3
3
1
1
1
1
1
0
0
0
0
0		7
6
5
2
1
1
1
1
1
1
1
0
0		11
9
8
4
3
2
1
1
1
1
1
1
1		20
17
13
7
5
4
4
3
1
1
1
1
1		27
23
18
9
7
6
5
4
3
2
1
1
1		45
38
30
16
13
10
8
7
5
4
4
3
3
TW14
12
10
8		5
4
3
1		9
7
5
3		15
12
9
5		24
19
14
8		43
33
24
13		58
44
33
18		96
74
55
30
RHWa, RHW-2a, THHW,
THW, THW-2		14
12
10
8		3
3
1
1		6
4
3
1		10
8
6
4		16
13
10
6		28
23
18
10		38
31
24
14		64
51
40
24
RHWa, RHW-2a, TW,
THW, THHW, THW-2		6
4
3
2
1		1
1
1
0
0		1
1
1
1
1		3
1
1
1
1		4
3
3
2
1		8
6
5
4
3		11
8
7
6
4		18
13
11
10
7
RHWa, RHW-2a, TW,
THW, THHW, THW-2		1/0
2/0
3/0
4/0		0
0
0
0		0
0
0
0		1
1
1
0		1
1
1
1		2
1
1
1		3
3
2
1		6
5
4
3
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		8
5
3
1
1
1
1
1
0
0
0
0
0		13
9
6
3
2
1
1
1
1
1
0
0
0		22
16
10
6
4
2
1
1
1
1
1
1
1		35
25
16
9
6
4
3
3
1
1
1
1
1		62
45
28
16
12
7
6
5
4
3
2
1
1		83
60
38
22
16
9
8
7
5
4
3
3
2		137
100
63
36
26
16
13
11
8
7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1		5
4
3
1
1
1
1
1
0		9
7
5
3
1
1
1
1
1		15
12
9
5
3
2
1
1
1		24
19
14
8
5
4
3
3
1		43
33
24
13
10
7
6
5
4		58
44
33
18
13
10
8
7
5		96
74
55
30
22
16
14
11
8
XHHW, XHHW-21/0
2/0
3/0
4/0		0
0
0
0		1
0
0
0		1
1
1
1		1
1
1
1		3
2
1
1		4
3
3
2		7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(7)
MAXIMUM NUMBER OF CONDUCTORS IN LIQUID-TIGHT FLEXIBLE METAL CONDUIT (LFMC)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		4
3
3
1
1
1
1
1
0
0
0
0
0		7
6
5
2
1
1
1
1
1
1
1
0
0		12
10
8
4
3
2
1
1
1
1
1
1
1		21
17
14
7
6
4
4
3
1
1
1
1
1		27
22
18
9
7
6
5
4
3
2
1
1
1		44
36
29
15
12
9
8
7
5
4
3
3
2
TW14
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
RHWa, RHW-2a, THHW,
THW, THW-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
RHWa, RHW-2a, 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
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		13
9
6
3
2
1
1
1
1
1
0
0
0		22
16
10
6
4
2
1
1
1
1
1
1
1		36
26
16
9
7
4
3
3
1
1
1
1
1		63
46
29
16
12
7
6
5
4
3
2
1
1		81
59
37
21
15
9
8
7
5
4
3
3
2		133
97
61
35
25
15
13
11
8
7
6
5
4
XHHW, XHHW-214
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
XHHW, XHHW-26
4
3
2
1
1/0
2/0
3/0
4/0		1
1
1
1
1
1
0
0
0		3
2
1
1
1
1
1
1
1		6
4
3
3
1
1
1
1
1		10
7
6
5
4
3
2
1
1		13
9
8
7
5
4
3
3
2		22
16
13
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(8)
MAXIMUM NUMBER OF CONDUCTORS IN RIGID METAL CONDUIT (RMC)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		4
3
3
1
1
1
1
1
0
0
0
0
0		7
6
5
2
1
1
1
1
1
1
1
0
0		12
10
8
4
3
2
2
1
1
1
1
1
1		21
17
14
7
6
4
4
3
1
1
1
1
1		28
23
19
10
8
6
5
4
3
2
2
1
1		46
38
31
16
13
10
9
7
5
4
4
3
3
TW14
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
RHWa, RHW-2a, THHW,
THW, THW-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
RHWa, RHW-2a, 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
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1		13
9
6
3
2
1
1
1
1		22
16
10
6
4
2
1
1
1		36
26
17
9
7
4
3
3
1		63
46
29
16
12
7
6
5
4		85
62
39
22
16
10
8
7
5		140
102
64
37
27
16
14
11
8
THHN, THWN, THWN-21/0
2/0
3/0
4/0		1
0
0
0		1
1
1
1		1
1
1
1		3
2
1
1		4
3
3
2		7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		9
7
5
3
1
1
1
1
1
1
0
0
0		15
12
9
5
3
2
1
1
1
1
1
1
1		25
19
14
8
6
4
3
3
1
1
1
1
1		44
33
25
14
10
7
6
5
4
3
2
1
1		59
45
34
19
14
10
8
7
5
4
3
3
2		98
75
56
31
23
16
14
12
9
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(9)
MAXIMUM NUMBER OF CONDUCTORS IN RIGID PVC CONDUIT, SCHEDULE 80 (PVC-80)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4		3
2
1
1
1
1		5
4
3
1
1
1		9
7
6
3
2
1		17
14
11
6
4
3		23
19
15
8
6
5		39
32
26
13
11
8
RHW, RHW-23
2
1
1/0
2/0
3/0
4/0		0
0
0
0
0
0
0		1
1
1
0
0
0
0		1
1
1
1
1
1
0		3
3
1
1
1
1
1		4
4
2
1
1
1
1		7
6
4
3
3
3
2
TW14
12
10
8		6
5
3
1		11
9
6
3		20
15
11
6		35
27
20
11		49
38
28
15		82
63
47
26
RHWa, RHW-2a, THHW,
THW, THW-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
RHWa, RHW-2a, TW,
THW, THHW, THW-2		6
4
3
2
1
1/0		1
1
1
1
0
0		1
1
1
1
1
1		3
3
2
1
1
1		7
5
4
3
2
1		9
7
6
5
3
3		16
12
10
8
6
5
RHWa, RHW-2a, TW,
THW, THHW, THW-2		2/0
3/0
4/0		0
0
0		1
0
0		1
1
1		1
1
1		2
1
1		4
3
3
THHN, THWN, THWN-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		9
6
4
2
1
1
1
1
0
0
0
0
0		17
12
7
4
3
1
1
1
1
1
1
1
0		28
20
13
7
5
3
3
2
1
1
1
1
1		51
37
23
13
9
6
5
4
3
2
1
1
1		70
51
32
18
13
8
7
6
4
3
3
2
1		118
86
54
31
22
14
12
10
7
6
5
4
3
XHHW, XHHW-214
12
10
8
6		6
5
3
1
1		11
9
6
3
2		20
15
11
6
4
35
27
20
118		49
38
28
15
11		82
63
47
26
19

(continued)

TABLE E3904.6(9)—continued
MAXIMUM NUMBER OF CONDUCTORS IN RIGID PVC CONDUIT, SCHEDULE 80 (PVC-80)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		6
5
3
1
1
1
1
1
0
0
0
0
0		11
9
6
3
2
1
1
1
1
1
1
1
0		20
15
11
6
4
3
3
2
1
1
1
1
1		35
27
20
11
8
6
5
4
3
2
1
1
1		49
38
28
15
11
8
7
6
4
3
3
2
1		82
63
47
26
19
14
12
10
7
6
5
4
3
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

TABLE E3904.6(10)
MAXIMUM NUMBER OF CONDUCTORS IN RIGID PVC CONDUIT SCHEDULE 40 (PVC-40)a

TYPE LETTERSCONDUCTOR SIZE
AWG/kcmil		TRADE SIZES
(inches)
1/23/4111/411/22
RHW, RHW-214
12
10
8
6
4
3
2		4
3
2
1
1
1
1
1		7
5
4
2
1
1
1
1		11
9
7
4
3
2
1
1		20
16
13
7
5
4
4
3		27
22
18
9
7
6
5
4		45
37
30
15
12
10
8
7
RHW, RHW-21
1/0
2/0
3/0
4/0		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
3
3
2
TW14
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
RHWa, RHW-2a, THHW,
THW, THW-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
RHWa, RHW-2a, 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		18
13
11
10
7
6
5
4
3
THHN, THWN, THWN-214
12
10
8		11
8
5
3		21
15
9
5		34
25
15
9		60
43
27
16		82
59
37
21		135
99
62
36
THHN, THWN, THWN-26
4
3
2
1
1/0
2/0
3/0
4/0		1
1
1
1
1
1
0
0
0		4
2
1
1
1
1
1
1
1		6
4
3
3
1
1
1
1
1		11
7
6
5
3
3
2
1
1		15
9
8
7
5
4
3
3
2		26
16
13
11
8
7
6
5
4
XHHW, XHHW-214
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0		8
6
4
2
1
1
1
1
1
1
0
0
0		14
11
8
4
3
2
1
1
1
1
1
1
1		24
18
13
7
5
4
3
3
1
1
1
1
1		42
32
24
13
10
7
6
5
3
3
2
1
1		57
44
32
18
13
9
8
7
5
4
3
3
2		94
72
54
30
22
16
13
11
8
7
6
5
4
For SI: 1 inch = 25.4 mm.
a. Types RHW, and RHW-2 without outer covering.

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