GFCI, AFCI, Tamper-Resistant and Weather-Resistant: What Is the Difference?

Four labels, four different jobs

Start with the hazard, not the appearance of the outlet. GFCI addresses ground-fault shock hazards; AFCI addresses hazardous electrical arcing that can start fires. Tamper-resistant shutters restrict access to receptacle contacts, while weather-resistant construction is designed for outdoor exposure. None substitutes for all the others. (cpsc.gov)

The comparison below describes features, not four mutually exclusive purchases. A single installation may need several. Device selection also depends on the circuit and applicable installation requirements, not simply which product fits the wall plate. (leviton.com)

GFCI: protection against ground-fault shock

A ground-fault circuit interrupter monitors outgoing and returning current. A small imbalance can indicate current escaping its intended path, potentially through a person. The device interrupts power to reduce the risk of severe shock. It is not permission to handle wet electrical equipment or assume every shock scenario is covered. (cpsc.gov)

Protection can be located at a receptacle or in a circuit breaker. A correctly wired GFCI receptacle can also protect downstream outlets, so a plain-looking outlet may already have protection elsewhere. Conversely, buttons alone do not establish that protection works. Have the protected locations identified and tested rather than buying a replacement based on looks. (cpsc.gov)

AFCI: protection against hazardous arcing

An arc-fault circuit interrupter responds to hazardous arcing conditions. Ordinary breakers address overloads and short circuits but may not respond to early arcing that can ignite nearby material. AFCI protection adds a different safeguard; it does not repair a deteriorated connection or damaged cord. (cpsc.gov)

Watch the terminology. A combination-type AFCI addresses series and parallel arcing; “combination” does not mean it includes GFCI protection. A dual-function AFCI/GFCI device provides both functions. Ask for the full protection description rather than relying on a test-button color or the word “combo.” (leviton.com)

For panel-related planning, see Circuit Breakers. If recurring trips prompted your research, Why Does a Circuit Breaker Keep Tripping? is a useful companion topic. Have the cause investigated rather than treating removal of protection as the solution.

Tamper-resistant: a barrier inside the slots

Tamper-resistant receptacles have internal shutters that restrict access to the energized contacts from most foreign objects while admitting an appropriate plug. This is a physical barrier, not fault-detecting electronics. A TR receptacle can also include GFCI or AFCI functionality. (leviton.com)

For a household with children, the distinction matters: installing a GFCI does not automatically provide shutters, and installing shutters does not automatically provide GFCI protection. Specify both where needed. “Tamper-resistant” should not be read as childproof or as a reason to allow children to play with plugs and outlets. (leviton.com)

Weather-resistant: construction plus the right cover

Weather-resistant receptacles use materials and components intended to withstand outdoor exposure, including ultraviolet light and corrosion. WR describes the device’s construction; it does not mean the outlet can sit uncovered in rain. (leviton.com)

The enclosure and cover are separate decisions. Directly exposed wet locations generally call for a suitable extra-duty while-in-use cover that protects the receptacle with a plug inserted. A sheltered damp location may allow a different approved cover. Have the actual exposure classified rather than assuming that every porch is dry. (leviton.com)

Consider the plug as well as the outlet: an oversized plug or cord arrangement should not prevent the intended cover from closing. A WR/TR/GFCI receptacle can combine several protections, but it still needs the appropriate enclosure assembly. (leviton.com)

Apply the features to the room—and the project

Kitchens, bathrooms and outdoor locations are longstanding priorities for GFCI protection. Kitchens can also involve AFCI requirements, so asking “GFCI or AFCI?” may present a false choice. Ask which protections apply to the particular receptacle, appliance and branch circuit. (cpsc.gov)

For Moore County projects, do not assume the newest published national code is the enforceable residential code. As checked on November 6, 2026, North Carolina OSFM lists the 2023 State Electrical Code as indefinitely delayed and lists the 2020 code with an exception for one- and two-family dwellings. Confirm the applicable edition, state amendments and scope with the permitting authority before selecting equipment. (ncosfm.gov)

An existing home, a replacement receptacle and a remodeled kitchen are not automatically the same code question. Ask how replacement, extension or renovation provisions affect the proposed work rather than using the home’s age as the only guide. (leviton.com)

Compare the complete installation, not just the device

A receptacle-level device can place reset access near the point of use; a protective breaker places it at the panel. These are not universally interchangeable installations. Circuit layout, existing wiring and the permitted protection method determine the appropriate arrangement. Panel work belongs with a qualified electrician; parts can remain energized even when the main breaker is off. (leviton.com)

For budgeting, request a scope rather than a device-only price. Factors affecting the scope and cost include condition, access, scope and required parts or equipment. Ask whether the proposal is a straightforward replacement or includes troubleshooting, wiring correction or an outdoor enclosure. Electrical Options & Planning can help organize those decisions before discussing Outlets & Switches with the team.

• Ask which hazards and code requirements the proposed device addresses.
• Ask where protection begins and which downstream outlets it covers.
• Ask whether protection belongs at the receptacle, breaker or both.
• Ask whether the quote includes diagnosis, required labels, covers and any wiring repairs.
• Ask what testing and reset instructions should remain with the homeowner.

Keep protection working after installation

CPSC recommends testing GFCIs after installation, at least monthly and after a power failure, following the manufacturer’s instructions. Its home safety checklist also recommends monthly AFCI testing. Plan for the power interruption before testing anything that supplies important equipment. (cpsc.gov)

If a device fails its prescribed test, will not restore power or repeatedly trips, seek assessment instead of assuming the electronics are merely inconvenient. Indicator lights are model-specific; consult the installed device’s instructions. (cpsc.gov)

Discoloration, unusual warmth, loose plug fit or damaged covers deserve attention independently of whether protection trips. Stop using visibly damaged equipment and arrange electrical help. When discussing work with The Electric Knight, describe the location, what was connected and what happened—observations are more useful than guessing which acronym will solve it. (cpsc.gov)

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