Power line communications

Definition
Power line communications (PLC) (also known as power line carrier, power line digital subscriber line (PDSL), mains communication, power line telecommunications, or power line networking) carries data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to [[consumers.

A wide range of power line communication technologies are needed for different applications, ranging from home automation to Internet access, which is often called broadband over power lines (BPL). Most PLC technologies limit themselves to one type of wires (such as premises wiring within a single building), but some can cross between two levels (for example, both the distribution network and premises wiring).