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Sizing of Cable containment, Power separation, Optical Fibre etc..
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Sizing of cable containment
To aid the cable containment design within an installation, we have provided estimated cable fill ratios for standard UTP cabling, if FTP, STP or SFTP cabling is to be used, this will further reduce the amount of cabling that can be installed within each containment system. |
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| Cat 5e |
| 4 |
| 6 |
| 8 |
| 10 |
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| 48 |
| 96 |
| 144 |
| 240 |
| 288 |
| 432 |
| 600 |
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| 60 |
| 120 |
| 180 |
| 300 |
| 360 |
| 540 |
| 720 |
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| 3 |
| 8 |
| 22 |
| 50 |
| 90 |
| 200 |
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| Cat 6 |
| 2 |
| 4 |
| 6 |
| 8 |
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| 24 |
| 48 |
| 72 |
| 120 |
| 144 |
| 216 |
| 288 |
|
| 40 |
| 80 |
| 120 |
| 200 |
| 240 |
| 360 |
| 480 |
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| 2 |
| 4 |
| 12 |
| 28 |
| 50 |
| 112 |
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| Cat 6a |
| 1 |
| 2 |
| 4 |
| 6 |
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| 24 |
| 48 |
| 72 |
| 120 |
| 144 |
| 216 |
| 288 |
|
| 30 |
| 60 |
| 90 |
| 150 |
| 180 |
| 270 |
| 360 |
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| 1 |
| 2 |
| 6 |
| 14 |
| 25 |
| 56 |
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20mm conduit |
25mm conduit |
32mm conduit |
50mm conduit |
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50mm cable tray |
100mm cable tray |
150mm cable tray |
250mm cable tray |
300mm cable tray |
450mm cable tray |
600mm cable tray |
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50mm cable basket |
100mm cable basket |
150mm cable basket |
250mm cable basket |
300mm cable basket |
450mm cable basket |
600mm cable basket |
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16mm x 25mm trunking |
38mm x 25mm trunking |
50mm x 50mm trunking |
75mm x 75mm trunking |
100mm x 100mm trunking |
150mm x 150mm trunking |
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With each of the fill ratios above we have allowed for a 30% future expansion capability, also all fill ratios include fill capacity for 90 degree bends and UTP bend radius requirements
Where possible we recommend the use of cable basket as this system provides the most flexible and cost effective solution, and enhances cable performance due to the non restricted air flow, around and within the cable basket, this is a necessary requirement when IP technology and Power over Ethernet (PoE) solutions are being considered. |
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Power separation |
Table below details the power separation from data and voice carrying cables in reference with ISO 11801 & EN 50174 |
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| Type of installation |
Without a divider |
With a non-metallic divider |
Aluminium divider |
Steel divider |
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Unscreened power cable and unscreened IT cable |
200mm |
200mm |
100mm |
50mm |
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Unscreened power cable screened IT cable |
50mm |
50mm |
50mm |
50mm |
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Screened power cable and unscreened IT cable |
50mm |
30mm |
50mm |
50mm |
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Screened power cable and screened IT cable |
50mm |
0mm |
50mm |
50mm |
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For Horizontal cabling of more than 35mt then no separation is required for the final 15mt |
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Optical fibre link loss by application chart |
This chart identifies the maximum link loss to run the required optical fibre application |
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Application |
Wavelength |
Maximum loss OM1 & OM2 fibre |
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10BaseFL |
850nm |
10 dB |
100BaseF |
1300nm |
11 dB |
1000BaseSX |
850nm |
2.38 dB |
1000BaseLX |
1300nm |
2.35 dB |
ATM 155 |
1300nm |
7 dB |
ATM 622 |
1300nm |
6 dB |
ATM 155 swl |
850nm |
7.2 dB |
FDDI |
1300nm |
11 dB |
Token Ring |
850nm |
13 dB |
Fiber Channel SX |
850nm |
6 dB |
Fiber Channel LX |
1300nm |
9.5 dB |
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