Conduit Fill Capacity Table
trade
size |
inside
diam. inch |
inside
diam. mm |
cable
outside diameter mm (in) |
3.3
(0.13) |
4.6
(0.18) |
5.6
(0.22) |
6.1
(0.24) |
7.4
(0.29) |
7.9
(0.31) |
9.4
(0.34) |
13.5
(0.53) |
15.8
(0.62) |
17.8
(0.70) |
| 1/2 |
.622 |
16 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| 3/4 |
.824 |
21 |
6 |
5 |
4 |
3 |
2 |
2 |
1 |
0 |
0 |
0 |
| 1 |
1.049 |
27 |
8 |
8 |
7 |
6 |
3 |
3 |
2 |
1 |
0 |
0 |
| 1-1/4 |
1.380 |
35 |
16 |
14 |
12 |
10 |
6 |
4 |
3 |
1 |
1 |
1 |
| 1-1/2 |
1.610 |
41 |
20 |
18 |
16 |
15 |
7 |
6 |
4 |
2 |
1 |
1 |
| 2 |
2.067 |
53 |
30 |
26 |
22 |
20 |
14 |
12 |
7 |
4 |
3 |
2 |
| 2-1/2 |
2.469 |
63 |
45 |
40 |
36 |
30 |
17 |
14 |
12 |
6 |
3 |
3 |
| 3 |
3.068 |
78 |
70 |
60 |
50 |
40 |
20 |
20 |
17 |
7 |
6 |
6 |
| 3-1/2 |
3.548 |
91 |
MAX |
MAX |
MAX |
MAX |
MAX |
MAX |
22 |
12 |
7 |
6 |
| 4 |
4.026 |
103 |
MAX |
MAX |
MAX |
MAX |
MAX |
MAX |
30 |
14 |
12 |
7 |
typical
2-pair CAT3 cable |
|
|
|
|
|
|
|
|
|
typical
4-pair CAT3 cable |
|
|
|
|
|
|
|
|
typical
4-pair CAT5E cable |
|
|
|
|
|
|
|
typical
4-pair CAT6 (without divider) cable |
|
|
|
|
|
|
| typical
4-pair CAT6 (with divider) or 4-pair ScTP cable |
|
|
|
|
|
typical
12-pair CAT3 unshielded cable |
|
|
|
|
typical
25-pair CAT3 unshielded cable
|
|
|
|
typical
50-pair CAT3 unshielded cable
|
|
|
typical
50-pair CAT3 shielded ARMM cable
|
|
typical
100-pair CAT3 unshielded cable
|
Sources: BICSI TDMM, General
Cable, Superior Essex |
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