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Leakage current detection interrupter extension cord with cord diagnostics

  • US 20040070899A1
  • Filed: 09/22/2003
  • Published: 04/15/2004
  • Est. Priority Date: 10/09/2002
  • Status: Active Grant
First Claim
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1. An electrical extension cord comprising:

  • an electrical cable having first and second ends including separate, insulated phase and neutral conductors surrounded by a conductive sensing shield wherein said cable is electrically connected at first ends of the phase and neutral conductors and conductive sensing shield to a plug having phase and neutral blades, a receptacle connected to the second end of the cable, and a fault circuit interrupter wherein the fault circuit interrupter is electrically connected at load end phase, neutral and shield ports to the cable at second ends of the phase, neutral and shield conductors, and at line end phase and neutral ports to the phase and neutral plug blades and wherein leakage current collected by the shield enables operation of the fault circuit interrupter to electrically disconnect the receptacle from the plug.

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