Conduit Fill Capacity Table

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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