At what current level do Class A ground-fault circuit interrupters (GFCIs) typically trip?

Class A ground-fault circuit interrupters (GFCIs) are designed to trip and deactivate electrical circuits when they detect ground faults that can pose a serious risk of electrocution. The typical trip setting for Class A GFCIs is at a current level of 6 milliamperes (mA). This sensitivity is crucial because it ensures protection from potentially lethal electric shocks, as even low levels of current (around 10 mA) can be dangerous, especially in wet environments where the body’s resistance to electric shock is significantly reduced. By tripping at 6 mA, GFCIs provide an important safety mechanism that mitigates the risk of severe electrical hazards.