Data transmission

摘要

A system for data transmission over an electricity distribution network. The system having an electrical apparatus having a shielded cable connected thereto. The cable has a core surrounded by a metallic sheath and armour surrounding the metallic sheath, wherein the armour is disengaged from around the metallic sheath at a position where the cable enters the apparatus and is supported relative to the apparatus at a position spaced from that position such that a portion of the metallic sheath is exposed.