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Why do we have GFCI outlets in the bathroom?
GFCI outlets... what is GFCI? It stands for Ground Fault Circuit Interrupter. It can save your or your family's life! I was reminded of this the other day when I stepped into this bathroom. Now, I didn't meet or see the homeowners here, but it appears that the lady of the household has big hair! She's even got a can of Big Sexy Hair!!
So what does a GFCI outlet do? It's there to protect people from electrical shock. When you look at a normal 120-volt outlet here in the United States, there are two vertical slots and then a round hole centered below them. The left slot is slightly larger than the right. The left slot is called "neutral," the right slot is called "hot" and the hole below them is called "ground." If an appliance is working properly, all electricity that the appliance uses will flow from hot to neutral.
A GFCI monitors the amount of current flowing from hot to neutral. If there is any imbalance, it trips the circuit. It is able to sense a mismatch as small as 4 or 5 milliamps, and it can react as quickly as one-thirtieth of a second. 
So let's say our subject lady is in the bathroom ... more

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