A fantastic article from John Bullock explaining all the potential issues highlighted within POE, plus the control protocols that still have to be written with drivers and ballasts designed before being tested.
Ideas, way ahead of reality.
Most of us are already using our computers to deliver power to do some of the basic stuff, as we charge our mobile devices using USB ports on desktop and laptop. But the move towards using Power over Ethernet to power and control lighting fixtures is something else altogether. Will your computer always talk to your lighting installation We have to forget the idea of a light fitting at the other end of a light switch. The entire issue of PoE is that the lighting installation is now another part of the computer network. The first issue that needs to be considered is the security of the lighting. Does the computer know that the lighting installation is there? We’ve all experienced the loss of a printer, or the camera that doesn’t register on the file manager.