PoE in Bundle of 24 to 192 Cables

Introduction

Power over Ethernet (PoE) is a technology that allows power and data to be delivered simultaneously through a conventional twisted-pair cable. This technology is commonly applied in monitoring systems (cameras), network repeaters, smart lighting, alarm systems, and other devices that support PoE.

It is possible to use 2 or 4 pairs for power delivery, depending on the power requirements of the device being powered (IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt). For existing installations, the use of CAT.5e and CAT.6 categories is acceptable. However, for new installations focused on PoE, the TIA TSB-184-A guideline recommends CAT.6A or higher.

The main point of attention in these applications is the increase in temperature, which becomes more significant as cables are grouped into bundles. Considering that, this bulletin aims to assist in the parameterization of PoE applications so that the number of cables per bundle is properly limited to ensure safety, integrity, and performance.