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Unfortunately, a regular circuit breaker does not protect you from electrical shock – it only protects the wire from overcurrent situations. In scenarios where there is a possible electrocution hazard (power tools, damp locations such as kitchens and bathrooms, unfinished spaces) GFCI (Ground Fault Circuit Interrupter or GFI) protection is required. What exactly does it do? The GFCI reads the current that goes out to the device being energized (aka the hot wire) and the current coming back to it. If the current leakage is over 4 to 6 milliamps, the GFCI trips the system to protect the person. Without the GFCI, the current may not reach the “trip level” of the regular circuit breaker possibly causing electrocution. So if you are renovating, buying or selling a home or just want to ensure the safety of your family – now you know why GFI.