Abstract: A power cord includes an outer coating layer. Live, neutral, and ground wires are in the outer coating layer. The live wire includes a core and first insulation layer. Live wire shielding and second insulation layers are successively sheathed outside the core. The neutral wire includes a core and first insulation layer. Neutral wire shielding and second insulation layers are successively outside the neutral wire core. The ground wire includes a core and insulation layer sheathed outside the ground wire core. When the live and neutral wire shielding layers are broken or the live wire and its shielding layer are short-circuited, and the neutral wire and its shielding layer are short-circuited, the leakage protector detects an abnormal signal of the power cord and interrupts the electrical connection of the live and neutral wires, to prevent fire between the live and neutral wire cores after the power cord is broken.

Abstract: The invention discloses a power cord leakage detection and protection circuit, comprising a live wire, a neutral wire and a tripping coil, wherein a controlled switch controlled by the tripping coil is respectively provided on the live wire and the neutral wire; a shielded wire is respectively provided outside the live wire and the neutral wire; tail ends of the two shielded wires are connected; a shielded wire detection circuit respectively connected to head ends of the two shielded wires is provided between the live wire and the neutral wire for detecting whether the shielded wire is cracked; and the shielded wire detection circuit is connected with a control circuit for controlling the tripping coil to disconnect the controlled switch when the shielded wire is detected to be cracked, preventing the wire core from being exposed after the shielded wire is broken and the short-circuiting between the live wire and the neutral wire to cause a fire accident.