Unshielded data cables should not be installed near sources of
electromagnetism. There is a standard that specifies these distances for
structured data cabling systems. EIA/TIA-569, the cabling pathways
standard, specifies the following Minimum Separation Distance from Power
Source at 480V or less:
| Condition | < 2kVA | 2-5kVA | < 5kVA |
|---|---|---|---|
|
Unshielded power lines or electrical equipment in proximity to open or non-metal pathways |
5 in. | 12 in. | 24 in. |
|
Unshielded power lines or electrical equipment in proximity to grounded metal conduit pathway |
2.5 in. | 6 in. | 12 in. |
|
Power lines enclosed in a grounded metal conduit ( or equivalent shielding (in proximity to grounded metal conduit pathway). |
6 in. | 12 in. | |
| Transformers and Electric Motors | 40 in. | 40 in. | 40 in. |
| Fluorescent lighting | 12 in. | 12 in. | 12 in. |