Installation Manual
WIRE SIZE O.D. (Approx. Dia.) NO. OF CONDUCTORS
THHN/THWN Inches [mm] COMP. COMP. MAX BOTH
A B COMP.
POWER WIRING 14 AWG 0.111 [2.8] 20 20 28
WITHOUT DEVICES 12 AWG 0.130 [3.3] 18 18 36
10 AWG 0.164 [4.2] 17 17 24
8 AWG 0.216 [5.5] 15 15 20
6 AWG 0.254 [6.5] 5 5 10
CABLE CATEGORY/ O.D. Section C Section D
TYPE DESIGNATION Inches [mm] 20% Fill
3
40% Fill
4
20% Fill
3
40% Fill
4
UNSHIELDED 4-pair, 24 AWG Cat. 3 UTP
0.190 [4.8] 22 45 12 24
TWISTED PAIR 4-pair, 24 AWG Cat. 5e UTP
0.210 [5.3] 18 37 9 19
4-pair, 24 AWG Cat. 6 UTP
0.250 [6.3] 13 26 6 13
TELEPHONE 2-pair, 24 AWG
0.140 [3.6] 41 83 22 44
3-pair, 24 AWG
0.150 [3.8] 36 72 19 38
4-pair, 24 AWG
0.190 [4.8] 22 45 12 24
25-pair, 24 AWG
0.410 [10.4] 4 9 2 5
COAXIAL
RG58/U 0.195 [5.0] 21 43 11 22
RG59/U 0.242 [6.1] 14 28 7 14
RG62/U 0.242 [6.1] 14 28 7 14
RG6/U 0.270 [6.9] 11 22 5 11
TWINAXIAL
100 Ohm 0.330 [8.4] 7 15 4 8
SHIELDED
TYPE 1 0.390 [9.9] 5 10 2 5
TWISTED PAIR
TYPE 2 0.465 [11.8] 3 7 2 4
TYPE 3 0.245 [6.2] 13 27 7 14
FIBER
Mini Zip Cord
0.079 x 0.157
[2 x 4] 51 103 27 55
Zip Cord
0.118 x 0.236
[3 x 6] 23 46 12 24
Round 4 Strand Fiber 0.187 [4.8] 23 46 12 24
Round 6 Strand Fiber 0.256 [6.5] 12 25 6 13
40N2 RACEWAY WIRE FILL CAPACITIES FOR DATA /COMMUNICATIONS
Section A
3.22 in.
2
[2080mm
2
]
Section B
1.71 in.
2
[1100mm
2
]
Section C
3.22 in.
2
[2080mm
2
]
Section D
1.71 in.
2
[1100mm
2
]
4.0"
[102mm]
2.0"
[51mm]
1. Cross-sectional area reduced due to 40N2F55 C-Box.
2. No. of conductors are reduced when using both channels for power.
3. 20% cable fill calculated to approximate reduction in cable capacity due to connectors
mounted within raceway and fittings that may restrict cross-sectional area.
4. 40% cable fill is the maximum designed cable fill based on TIA/EIA 569-A.
40N2 RACEWAY WIRE FILL CAPACITIES FOR POWER