I’ll start by saying that I love Power Over Ethernet (PoE).
Yeah, yeah, it’s what I do for a living, but, really, how cool is it that you can take the ethernet cable you have in your wall and get it to power up cameras, iPads, or even TV’s? I see PoE as Potential (okay, yeah, I couldn’t resist the nerd joke, and be forewarned they keep coming).
In all seriousness, though, Power Over Ethernet can save you 30% on any given project where you would otherwise have to call a licensed electrician out to pull a permit just to put an outlet somewhere so you can hang a camera. Even better, because PoE runs on low voltage power (less than 56 volts) you can safely do the work yourself, or at least get your techie nephew to do it.
If it’s so cool, why doesn’t everyone do this all the time? Frankly I’m stumped. However, I blame it on it sounding too technical because it has to do with computers talking to each other.
That ends today. I help a lot of people find the right PoE solution, and believe me when I say you can understand PoE. Once you have a few basic terms and principles, you’ll blow minds! To make that magic happen for you I will simplify Power Over Ethernet (PoE) in an easy to understand way even if you’ve never worked on a network before.
Let’s start off with a pronunciation guide. This is worth your time. You drop this your friends and coworkers, and you become the de facto expert on PoE.
- PoE – pronounced PEE – OH – EEE. Not like Edgar Allan “Poe”.
- IEEE 802.3af – pronounced EYE TRIPLE EEEE EIGHT OH TWO DOT THREE AYE EF.
- Okay, so say it with me now . . . EYE TRIPLE EEEE EIGHT OH TWO DOT THREE AYE EF.
|PoE Type or Standard||Nickname||Power Per Port
(at the device)
|Types of Devices|
|IEEE 802.3af||PoE||12.9 watts||
|IEEE 802.3at||PoE+||25.5 watts||
|*Passive PoE||24 Volt PoE
|Up to 55 watts||
*Passive PoE can operate anywhere from 12 volts up to 58 volts. You’ll want to check your specifications carefully to make sure they match your device.