This article will provide a “rough guide” for an IT administrator who is implementing a Power over Ethernet (PoE), PoE+ and/or four-pair PoE++ power over an existing cabling plant, and some implied guidance for new installations. The primary focus will be on “rule-of-thumb” considerations for how to distribute power over existing cabling plants, simple measurements and calculations to determine whether temperatures of cabling may exceed their ratings, and considerations for connector performance and overall reach reduction.
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