GFCI outlets, or ground fault circuit interrupter outlets, came to be in the 1970s and changed the world of electrical safety. While regular outlets are vulnerable to electrical errors, GFCI outlets protect people and pets from dangerous irregularities in electricity. Even people who are unfamiliar with the name have likely come across plenty of GFCI outlets – they’re recognizable by the black and red “test” and “reset” buttons.
How Do GFCI Outlets Work?
While the flow of electricity through the wires in our homes is generally quite steady and reliable, at times, electricity takes a detour within the ground. Usually the result of damaged or faulty wiring, these unexpected detours, called ground faults, can throw off the tradeoff of electricity in and out of a circuit and cause harm to anyone nearby.
For example, if someone were using a blow dryer and dropped it into a wet sink, they’re creating an electrical situation that could turn deadly with regular outlets. GFCI outlets cut the power to the outlet and interrupt the electrical surge.
GFCI outlets come equipped with a circuit breaker that acts quickly (within 1/40 of a second!) to shut off electric power in the outlet if there’s a ground fault to prevent the electrical surge from doing any real damage.
Where Do I Need GFCI Outlets?
It’s likely that you’ve already got GFCI outlets throughout your home, but if you’re doing some rewiring of an older house or getting some updates done, it’s important to know where GFCI outlets are mandatory. Since their creation, GFCI outlets have become required for new construction in various circumstances and locations, including:
Since water is an excellent (read: dangerous) conductor of electricity, many of the required areas are water-related. GFCIs won’t prevent all shocks, but they prevent lengthy electricity surges that can be fatal. Therefore, even though they’re not legally required in older homes (unless you’re revamping your wiring), it’s a good idea to install them.
Can I Install GFCI Outlets Myself?
Without some background knowledge of the inner workings of electrical systems, installation might be best left up to electrical professionals. However, many DIYers with some know-how choose to save cash by installing them themselves.
First, check with your local building authority to make sure you’re allowed to work on the wiring in your home. In some places, it’s a no-go and you’ll have to hire an electrician no matter how wire-savvy you are.
Then, confirm that the outlet in question is a three-prong outlet that’s connected to three wires – if either of those conditions isn’t true, the task is best left up to a trained electrician. Two holes instead of three indicate old wiring, and five wires instead of three indicate tricky positioning on the electrical circuit.
Otherwise, as long as you’ve got working knowledge of the way outlets are wired and how electrical current travels, you can install GFCI outlets yourself by following these six steps:
If any of those steps are extreme head-scratchers, play it safe and hire out the installation. With processes that involve snipping wires in your home, it’s often worth the price to outsource the efforts. Either way, once the installation is complete, be sure to test the outlet.
How To Test
Make sure the outlet is working properly by conducting a simple test:
Once they’re up and running, GFCI outlets require very little upkeep. It’s a good idea to follow the test process about once a month to confirm that everything is running as expected.
Small events like static and lightning can cause a GFCI to shut off, but as long as it’s infrequent, this is no cause for alarm. If it happens more than weekly, the outlet likely needs replacing.
Most people have lived with GFCI outlets in their homes for years without even knowing about the life-saving technology within their walls. Affordability, ease of installation, and low maintenance make GFCI outlets revolutionary household safety technology.
Featured Image: Tony Webster, Flickr
Pete has been working in the trades since high school, where he first developed a passion for woodworking. Over the years, he has developed a keen interest in a wide variety of DIY projects around the home. Fascinated by all sort of tools, Pete loves reading and writing about all the latest gadgets and accessories that hit the market. His other interests include astronomy, hiking, and fishing.
As the founder of House Grail, David’s primary goal is to help consumers make educated decisions about DIY projects at home, in the garage, and in the garden.