Electrical outlets near water sources like sinks and laundry appliances, as well as all garage and outdoor outlets, should have a ground fault interrupter (GFCI). These are the outlets with the "test" and "reset" buttons. If every home had GFCIs, deaths from electrocution in and around the home could be reduced by 50%.

A GFCI works by monitoring the flow of electricity through the outlet's circuit. If there is any variation in the current, the GFCI will automatically cut off the flow of electricity, preventing injury.

There are three different types of ground fault circuit interrupters:

  1. Whole-house devices for circuit panels that protect against external power surges. Only a certified electrician should install these.
  2. Receptacle-based protectors that replace standard wall outlets. You can install these yourself by carefully following manufacturer's instructions.
  3. Portable units that simply plug into a wall outlet. Any homeowner can use this type.

GFCIs should be tested every month. Plug a lamp or radio into a GFCI outlet and turn it on. Push the "test" button on the outlet; the lamp or radio should turn off immediately. If it doesn't, the GFCI has been wired improperly, and should be fixed by a certified electrician.

GFCIs are inexpensive and provide the best protection against electrical hazards, and we strongly recommend using them in your home. But remember, even the best GFCI can't offer 100 percent protection, so never forget other electrical safety rules.

More from this category

Carbon monoxide - the invisible enemy

carbon monoxide detector

Find out what causes deadly carbon monoxide poisoning - and how to prevent and detect it.

learn more

Aging in place

Adjustable height kitchen sink

Using universal design principals, your home can adapt to your changing lifestyle needs.

learn more

Take care with power tools

Man using a circular saw

Taking a few minutes to check power tools before and after using will keep them in good working order and will keep you safe.

learn more

Radon gas

Radon pipe in rock

Find out how to test for radon in your home and what to do if you have it.

learn more

Home security systems

Lit up house at night

Many homeowners are investing in home security systems to deter criminals, provide home protection and deliver peace of mind.

learn more

Be prepared for bad weather

Flashlight

The best way to weather a storm is to have a safety plan in place ahead of time.

learn more

Wiring and grounding in older homes

Wires running through the walls of an older home

The wiring inside most older houses wasn’t designed to handle the electrical needs we have today.

learn more

Natural gas leaks

Groucho Marx glasses

Although leaks from natural gas lines are rare, it’s important to know the warning signs.

learn more

Portable generators & space heaters

portable generator

Portable heaters and generators are convenient, but use them with extreme caution.

learn more