PoE, PoE+ and PoE++: Choosing Ethernet Cable for Power Over Ethernet
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Power over Ethernet simplifies installation by carrying data and DC power over the same network cabling. That is why PoE is now common for IP cameras, wireless access points, VoIP phones, access-control devices, sensors and other low-voltage equipment.
The cable still matters. A network link that passes data can perform differently when it is also carrying meaningful electrical power, especially across long runs or large bundles.
What PoE, PoE+ and PoE++ mean
The IEEE PoE family has evolved to support progressively higher power. You will commonly see equipment described as PoE, PoE+ or PoE++. Higher-power implementations can energize more pairs and place greater emphasis on conductor resistance, connection quality and thermal management.
The practical takeaway for an installer is not to select cable from the device label alone. Check the device and switch requirements, expected channel length, bundle conditions and the cable manufacturer's specifications.
Why solid bare copper is the preferred baseline
For permanent structured cabling, solid bare copper is a strong baseline. Copper-clad aluminum (CCA) uses aluminum with a copper coating and has higher electrical resistance than solid copper. That resistance is undesirable when a cable is expected to carry both data and power.
For commercial permanent links, we recommend using category-rated solid copper cable that is appropriate for the installation environment. Our Cat6 and Cat6A collections are organized around professional installation rather than patch-cord-only products.
Conductor gauge and voltage drop
Larger conductors generally have lower electrical resistance. That is one reason 23 AWG solid Cat6 is popular for permanent PoE installations. It is not a universal requirement, but it can provide useful electrical margin compared with a smaller conductor of the same material and length.
For more detail, read 23 AWG vs 24 AWG Ethernet Cable.
Cat5e, Cat6 or Cat6A for PoE?
PoE compatibility is not determined by category name alone. The appropriate category depends on the data rate, equipment, length and installation environment. In practical new commercial work, Cat6 is often the default because it provides a useful balance of performance, cost and availability. Cat6A becomes more attractive where 10 Gigabit Ethernet, higher-frequency performance, larger electrical margin or long-term infrastructure life is a priority.
| Project condition | Practical starting point |
|---|---|
| Phones, basic cameras and ordinary office drops | Properly specified Cat5e or Cat6 may be suitable |
| New commercial camera / access-point installation | Cat6 solid copper is a strong default |
| Higher-power endpoints or dense cable bundles | Evaluate Cat6/Cat6A gauge, temperature and bundle ratings carefully |
| 10GbE plus PoE infrastructure | Cat6A is often the preferred design direction |
Bundle heat is a design consideration
One powered cable may not create a meaningful thermal issue, but many energized cables grouped together can raise bundle temperature. Cable construction, ambient temperature, pathway fill and power level can all matter. Use cable documented for the intended PoE application and follow the applicable installation requirements for the project.
Connections are part of the power path
A high-quality cable cannot compensate for poor terminations. Keystone jacks, patch panels, plugs and patch cords all become part of the channel. Maintain pair geometry, terminate to the hardware manufacturer's instructions and avoid damaged or marginal contacts.
For permanent work, match the cable category to compatible connectors and termination hardware.
Riser, plenum and environmental ratings still apply
PoE capability does not replace fire or environmental requirements. A cable routed through a plenum space may require a CMP-rated jacket; a typical riser application may use CMR where permitted. Outdoor and wet-location projects require cable specifically designed for those conditions.
See our CMR vs CMP guide before finalizing the bill of materials.
Contractor checklist
Before ordering cable for a powered network, verify the Ethernet category, solid-copper construction, gauge, jacket rating, shielding requirements, run length, endpoint power requirement and expected bundle conditions. Then verify that the patch panels, jacks and patch cords are compatible with the design.
For multi-box camera, Wi-Fi or access-control projects, use our Project Quote page for job-specific material pricing.