Conduit Fill Table PVC
This conduit fill table is used to determine how many wires can be safely put into PVC conduit tubing. Each row going across is a different size of PVC conduit (Schedule 40 or 80). Each column (going up and down) is a different gauge of wire. The results show the allowable number of wires for each size/type of conduit and wire, based on the 2020 NEC code. Also see: the non-PVC Conduit Fill Table
Trade Size in Inches |
Wire Size (THWN, THHN) Conductor Size AWG/kcmil |
| 14 |
12 |
10 |
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 |
| 1/2 |
1/2 in SCH 40 |
11 |
8 |
5 |
3 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1/2 in SCH 80 |
9 |
6 |
4 |
2 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3/4 |
3/4 in SCH 40 |
21 |
15 |
9 |
5 |
4 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
|
|
|
| 3/4 in SCH 80 |
17 |
12 |
7 |
4 |
3 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
1 in SCH 40 |
34 |
25 |
15 |
9 |
6 |
4 |
3 |
3 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
| 1 in SCH 80 |
28 |
20 |
13 |
7 |
5 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
|
|
|
| 1 1/4 |
1 1/4 in SCH 40 |
60 |
43 |
27 |
16 |
11 |
7 |
6 |
5 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
| 1 1/4 in SCH 80 |
51 |
37 |
23 |
13 |
9 |
6 |
5 |
4 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
| 1 1/2 |
1 1/2 in SCH 40 |
82 |
59 |
37 |
21 |
15 |
9 |
8 |
7 |
5 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
| 1 1/2 in SCH 80 |
70 |
51 |
32 |
18 |
13 |
8 |
7 |
6 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
2 |
2 in SCH 40 |
135 |
99 |
62 |
36 |
26 |
16 |
13 |
11 |
8 |
7 |
6 |
5 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| 2 in SCH 80 |
118 |
86 |
54 |
31 |
22 |
14 |
12 |
10 |
7 |
6 |
5 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| 2 1/2 |
2 1/2 in SCH 40 |
193 |
141 |
89 |
51 |
37 |
22 |
19 |
16 |
12 |
10 |
8 |
7 |
6 |
4 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
| 2 1/2 in SCH 80 |
170 |
124 |
78 |
45 |
32 |
20 |
17 |
14 |
10 |
9 |
7 |
6 |
5 |
4 |
3 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
| 3 |
3 in SCH 40 |
299 |
218 |
137 |
79 |
57 |
35 |
30 |
25 |
18 |
15 |
13 |
11 |
9 |
7 |
6 |
5 |
5 |
4 |
3 |
3 |
2 |
2 |
2 |
1 |
| 3 in SCH 80 |
265 |
193 |
122 |
70 |
51 |
31 |
26 |
22 |
16 |
14 |
11 |
9 |
8 |
6 |
5 |
5 |
4 |
3 |
3 |
2 |
2 |
2 |
1 |
1 |
| 3 1/2 |
3 1/2 in SCH 40 |
401 |
293 |
184 |
106 |
77 |
47 |
40 |
33 |
25 |
21 |
17 |
14 |
12 |
10 |
8 |
7 |
6 |
5 |
4 |
4 |
3 |
3 |
3 |
3 |
| 3 1/2 in SCH 80 |
358 |
261 |
164 |
95 |
68 |
42 |
35 |
30 |
22 |
18 |
15 |
13 |
10 |
8 |
7 |
6 |
6 |
5 |
4 |
3 |
3 |
3 |
3 |
2 |
4 |
4 in SCH 40 |
517 |
377 |
238 |
137 |
99 |
61 |
51 |
43 |
32 |
27 |
22 |
18 |
15 |
12 |
11 |
9 |
8 |
7 |
5 |
5 |
4 |
4 |
4 |
3 |
| 4 in SCH 80 |
464 |
338 |
213 |
123 |
89 |
54 |
46 |
39 |
29 |
24 |
20 |
17 |
14 |
11 |
9 |
8 |
7 |
6 |
5 |
4 |
4 |
4 |
3 |
3 |
5 |
5 in SCH 40 |
815 |
594 |
374 |
216 |
156 |
96 |
81 |
68 |
50 |
42 |
35 |
29 |
24 |
20 |
17 |
15 |
13 |
11 |
9 |
8 |
7 |
7 |
6 |
6 |
| 5 in SCH 80 |
736 |
537 |
338 |
195 |
141 |
86 |
73 |
61 |
45 |
38 |
32 |
26 |
22 |
18 |
15 |
13 |
12 |
10 |
8 |
7 |
7 |
6 |
6 |
5 |
6 |
6 in SCH 40 |
>1K* |
859 |
541 |
312 |
225 |
138 |
117 |
98 |
73 |
61 |
51 |
42 |
35 |
28 |
24 |
21 |
19 |
16 |
13 |
11 |
11 |
10 |
9 |
8 |
| 6 in SCH 80 |
>1K* |
770 |
485 |
279 |
202 |
124 |
105 |
88 |
65 |
55 |
46 |
38 |
31 |
25 |
22 |
19 |
17 |
14 |
12 |
10 |
9 |
9 |
8 |
7 |
| |
*Please refer the National Electric Code of 2017 for the exact calculation.
Above information referenced from tables C10, and C11 in the National Electric Code of 2017.
For more information on the following types of conduit, please see the table listed below in the appendix C of the National Electric Code of 2017.
Rigid PVC Conduit, Schedule 80 -- Table C10
Rigid PVC Conduit, Schedule 40 -- Table C11
Flexible Metallic Conduit -- Table C3
Liquidtight Flexible Metallic Conduit -- Table C7
Liquidtight Flexible Nonmetallic Conduit (Type FNMC-B)-- Table C5
If you have any other questions see the NEC Code Book or ask an Elliott Electric Salesperson.
%CustomDescriptor%
From %Item.VendorName%, %Item.LongDescription%
%Price%
Item Details
%Price%
%Label%