SEPARATION FROM SOURCES OF INTERFERENCE
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:
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Minimum Separation Distance from Power Source at 480V or less
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Condition
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<2kVA
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2-5kVA
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>5kVA
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Unshielded power lines or electrical equipment in proximity to open or non-metal pathways
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5 in.
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12 in.
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24 in.
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Unshielded power lines or electrical equipment in proximity to grounded metal conduit pathway
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2.5 in.
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6 in.
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12 in.
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Power lines enclosed in a grounded metal conduit ( or equivalent shielding ( in proximity to grounded metal conduit pathway).
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---
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6 in.
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12 in.
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Transformers and Electric Motors
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40 in.
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40 in.
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40 in.
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Fluorescent lighting
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12 in.
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12 in.
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12 in.
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