GFCI and AFCI Basics

GFCI and AFCI Basics

Protecting against ground faults and arc faults in branch circuits  

Two different technologies protect against two different types of hazard. Ground fault circuit interrupter (GFCI) devices protect people from shock by opening a circuit at a low threshold of leakage current (typically 6mA). Arc fault circuit interrupter (AFCI) devices protect buildings and occupants by opening a circuit upon detection of an arc fault. The threshold current for an AFCI is too high to protect individuals against shock. Both types of devices must be installed in readily ac

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