[lylebarrere]

What is the power limit of POE? I don't see a reason to try to dim LEDs on AC or a reason to keep converting DC/AC/DC/AC so often. Wouldn't POE or a similar standard be better?

[unwind]

PoE (that's Power over Ethernet, http://en.wikipedia.org/wiki/Power_over_Ethernet) maxes out at 25.5 W at the powered device.

Not a lot general purpose domestic electricity, although of course lighting is being pushed down towards lower power these days.

[theandrewbailey]

USB might be a good alternative if the data bandwidth of Ethernet isn't required. 60W limit for 12 volts, 100W at 20 volts.

https://en.wikipedia.org/wiki/Universal_Serial_Bus#USB_Power...