Power over Ethernet Plus Plus (PoE++)
IEEE 802.3bt Power over Ethernet that can deliver substantially more power than earlier PoE standards over balanced copper cabling.
What is Power over Ethernet Plus Plus (PoE++)?
PoE++ is the common name for IEEE 802.3bt, the Power over Ethernet standard that uses all four cable pairs to deliver more power than 802.3af PoE or 802.3at PoE+. It is used for devices such as pan-tilt-zoom cameras, larger wireless access points, video displays, access-control equipment, and building automation endpoints. Type 3 supports up to 60 watts at the power source, while Type 4 supports up to 90 watts; the usable power at the device is lower because of cable loss. Designing for PoE++ is not just a switch-port decision. The cabling contractor must consider cable category, conductor size, bundle heating, pathway fill, connector performance under load, and the power class requested by each device. Long bundles in warm ceiling spaces can require derating or a different pathway strategy. A practical design confirms the device load, switch power budget, distance, cable construction, and applicable TIA guidance before equipment is purchased.
Frequently asked questions
Published references
Use the current project documents and adopted code. These links identify the standards owner, regulator, or manufacturer behind this article.
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Related terms
Structured Cabling
The standardized cabling infrastructure (Cat6/6A, fiber) that supports networking, voice, video, and low-voltage devices.
Wireless Access Point (WAP)
The ceiling- or wall-mounted radio that provides Wi-Fi coverage, powered and connected over a single Ethernet cable.
PoE (Power over Ethernet)
A standard that delivers power and data over a single Ethernet cable.
Category 6A (Cat6A)
A balanced twisted-pair copper cabling standard designed for 10 Gigabit Ethernet to 100 meters.