The Leviton GFWT1-W is a 15-amp SmartlockPro Slim GFCI outlet in White with weather-resistant and tamper-resistant ratings - the code-compliant choice for outdoor receptacles, wet locations, damp locations, and any installation covered by a weatherproof in-use cover. The weather-resistant construction uses sealed components and materials that resist moisture ingress, UV degradation, and temperature cycling per UL 498 and CSA-C22.2 No. 42 standards. Tamper-resistant shutters require simultaneous insertion of both plug blades, blocking foreign object insertion. The self-test function automatically verifies ground-fault response capability at regular intervals without interrupting power. LED provides real-time status: solid green for protected, blinking red for wiring error, no light for tripped. External back wire clamps with visual seating indicators make outdoor installation faster and more reliable. Wallplate sold separately.
When do outdoor circuits require a weather-resistant GFCI instead of a standard GFCI?
Use a weather-resistant GFCI like the GFWT1-W anywhere the receptacle is installed outdoors or in wet or damp locations where code requires WR marking. The weather-resistant construction is designed to hold up better against moisture, sunlight, and temperature swings than a standard indoor GFCI. It is the right choice for patios, porches, exterior walls, garages with exposed moisture, and similar spaces when paired with the correct cover.
What is the difference between weather-resistant and weatherproof?
Weather-resistant refers to the outlet itself. The GFWT1-W uses materials and internal components designed to resist corrosion, UV exposure, and moisture-related degradation. Weatherproof describes the complete installation, which also requires the proper approved box and an in-use cover when required. A weather-resistant receptacle still needs the correct cover system for code-compliant outdoor use.
What do the LED indicator states mean on the GFWT1-W?
The LED gives quick status feedback. Solid green means the device is powered and actively providing GFCI protection. Blinking red indicates a wiring error or internal fault that needs correction. No light generally means the outlet is tripped and power is off at the receptacle. If the LED blinks red after installation, verify that LINE and LOAD are not reversed.
Can the LOAD terminals protect downstream outlets?
Yes. The GFWT1-W supports 20-amp feed-through protection, so outlets wired to the LOAD side are protected by the upstream GFCI device. This lets one outdoor-rated GFCI protect additional standard receptacles downstream on the same branch circuit, provided the wiring is connected correctly and the overall installation meets code.
How does the self-test feature work?
The GFWT1-W automatically runs internal self-checks at regular intervals to confirm the ground-fault protection circuitry is still functioning. This monitoring happens without interrupting normal power during routine operation. If the device detects that protection can no longer be provided, it trips and indicates a fault so the receptacle can be replaced instead of remaining energized without protection.
# Leviton 15 Amp Self-Test Slim GFCI Outlet, Weather-Resistant Tamper-Resistant with LED Indicator (White) **Model:** `GFWT1-W` **Brand:** Leviton **Category:** Gfci Outlet > The Leviton GFWT1-W is a 15-amp SmartlockPro Slim GFCI outlet in White with weather-resistant and tamper-resistant ratings - the code-compliant choice for outdoor receptacles, wet locations, damp locations, and any installation covered by a weatherproof in-use cover. The weather-resistant construction uses sealed components and materials that resist moisture ingress, UV degradation, and temperature cycling per UL 498 and CSA-C22.2 No. 42 standards. Tamper-resistant shutters require simultaneous insertion of both plug blades, blocking foreign object insertion. The self-test function automatically verifies ground-fault response capability at regular intervals without interrupting power. LED provides real-time status: solid green for protected, blinking red for wiring error, no light for tripped. External back wire clamps with visual seating indicators make outdoor installation faster and more reliable. Wallplate sold separately. ## Specifications | Attribute | Value | |---|---| | Product Type | GFCI Outlet | | Amperage | 15 | | Voltage Vac | 125 | | Feed Through A | 20 | | Nema Config | 5-15R | | Self Test | Yes | | Tamper Resistant | Yes | | Weather Resistant | Yes | | Led Indicator | Yes | | Slim Profile | Yes | | Color | White | | Finish Code | W | | Wire Gauge Awg | 14-10 | | Back Wire | Yes | | Side Wire | Yes | | Trip Level | Class A, 5mA | | Sccr Ka | 10 | | Wallplate Included | No | | Certifications | UL 943, UL 498, CSA-C22.2 No. 144.1-06, NEMA WD6, NEMA WD1 | | Warranty | 2-Year Limited | ## What's Included - (1) Leviton GFWT1-W GFCI Outlet - (2) Mounting Screws - (1) Self-Grounding Clip Source: https://www.jaspecs.com/leviton/gfci-outlet/gfwt1-w-leviton-slim-gfci-outlet-15a-white-weather-resistant/