At what differential in milliamps will a GFCI typically interrupt the current?

A Ground Fault Circuit Interrupter (GFCI) is designed to protect individuals from electric shock by interrupting the electrical circuit when it detects an imbalance in the electrical current. A typical GFCI is calibrated to trip at a differential of around 5 milliamps. This sensitivity is crucial in environments such as healthcare facilities, where individuals may be more vulnerable to electrical hazards.

The 5-milliamp threshold is particularly important because it strikes a balance between providing adequate protection from electric shock while minimizing the risk of nuisance tripping. When current leakage exceeds this threshold, the GFCI automatically cuts off the electrical supply, thereby preventing potential electrocution. This responsiveness helps to ensure a safer environment in settings where patients may be using electrically powered devices.

Understanding the function and specifications of GFCIs, including their trip thresholds, is essential for maintaining safety standards in healthcare settings. Keeping this knowledge in mind helps ensure that healthcare professionals can effectively safeguard themselves and their patients from electrocution hazards related to electrical equipment.