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Ethernet cables in metal portioned walls

Stuart Urban

What are people's thoughts on achieving compliance with the below when installing ethernet/structured wiring cables in metal partitioned walls? 

Is ethernet SELV or PELV? If it is can we assume that everything that the structured wiring is used for will be SELV or PELV.

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    This is not quite as simple to answer as it once might have been thought.

    • Can you be sure the structured cabling will always be used for Ethernet? PSTN for example is not necessarily SELV or PELV.
    • Unfortunately the BS EN 62368 series of standards no longer uses SELV and PELV definitions, and the new definitions ES1 and ES2 don't map directly to SELV sources - especially in single-fault conditions. This is particularly problematic for Power Over Ethernet applications ... but potentially plain Ethernet too (although at the moment isolation is still included in the Ethernet standard).
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  • 0

    This is not quite as simple to answer as it once might have been thought.

    • Can you be sure the structured cabling will always be used for Ethernet? PSTN for example is not necessarily SELV or PELV.
    • Unfortunately the BS EN 62368 series of standards no longer uses SELV and PELV definitions, and the new definitions ES1 and ES2 don't map directly to SELV sources - especially in single-fault conditions. This is particularly problematic for Power Over Ethernet applications ... but potentially plain Ethernet too (although at the moment isolation is still included in the Ethernet standard).
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