Power line communication apparatus including AC power socket

A power line communication apparatus comprising:

• a mains power connector assembly comprising at least three first connectors;
• an AC power socket comprising at least three second connectors;
• power line communication circuitry electrically connected with each of the first connectors, wherein the power line communication circuitry is configured to transmit and/or receive data according to a transmission method;
• and
• a mains filter having at least three first ports, at least three second ports, and at least three filter paths, the mains filter including
• the first ports being electrically connected to the first connectors, respectively,
• the second ports being electrically connected to the second connectors, respectively,
• each of the filter paths being respectively provided between a corresponding first port of the at least three first ports and a corresponding second port of the at least three second ports, and the filter paths being respectively symmetric with respect to each other,
• a low-pass filter including respective electrical elements between each pair of the filter paths to attenuate interference signals transmitted along respective pairs of the filter paths, and
• the mains filter being configured to reduce radiation of the transmitted and/or received data on mains power lines by attenuating the interference signals transmitted along respective pairs of the filter paths that are received at the AC power socket and transmitted from the first ports to the second ports.