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-   -   Ground Fault Interupters (https://www.askmehelpdesk.com/showthread.php?t=112368)

  • Jul 22, 2007, 12:23 PM
    CLS
    Ground Fault Interupters
    Why so GFIs require a separate neutral for each one?
  • Jul 22, 2007, 12:43 PM
    tkrussell
    A GFI measures the current flow in both the hot and the neutral. If it sees a 5 milliamp or more difference between the wires, it assumes a ground fault and shuts off.

    So both the hot and neutral of a circuit must run through a GFI device to achieve this comparison.

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