The three basic types used in homes are the GFI outlet, the GFI circuit breaker and the portable GFI. All perform the same function each has different applications and limitations.
The GFI outlet (shown above) is intended as a replacement for a standard electrical outlet. It protects any appliance plugged into it, and can also be wired to protect other outlets that are connected to it.
IMPORTANT: A GFI outlet is not difficult to install, but the instructions for installation and testing must be followed precisely to insure the GFI works properly!!
The GFI circuit breaker controls an entire circuit, and is installed as a replacement for a circuit breaker on your home's main circuit board. Some homes are wired so that all bathrooms or all outdoor fixtures are on the same circuit. Rather than install multiple GFI outlets, one GFI circuit breaker can protect the entire circuit.
If you decide that the GFI circuit breaker is your best option, you must purchase one that is a match for your main electrical panel. If you have an older panel that utilizes fuses, you cannot use a GFI circuit breaker and must use GFI outlets instead.
Resetting a GFI circuit breaker is a little different than resetting an outlet-type GFI. There is no "reset" switch. Instead, the GFI breaker is reset by first switching the breaker to the full "off" position, then to the full "on" position to restore power.
There is also a portable GFI that is often used by contractors.
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