20A Weather-Resistant GFCI Receptacle (WR & TR)
- 20A GFCI receptacle for higher-amperage outdoor and damp-location projects
- NEMA 5-20R face with the characteristic T-slot configuration
- Weather-resistant construction plus tamper-resistant shutters
- Self-test monitoring function for current GFCI replacement needs
- UL-listed GFCI certification context for exterior project positioning
Why Choose ShengYu
- North America Market Expertise
- Stable Production, Reliable Quality
- OEM / ODM for Brand Growth
- Commercial Project Supply Support
- Private Label & Packaging Customization
Available Colors
20A Weather-Resistant GFCI Receptacle Description
20A Weather Resistant GFCI Receptacle Tamper-Resistant Self-Test is a GFCI outlet designed for outdoor patios, exterior facilities, outdoor kitchens, and other damp or wet-location projects that need both ground-fault protection and a NEMA 5-20R wall device. It features a 20A rating, self-test monitoring functionality, a NEMA 5-20R T-slot face, weather-resistant and tamper-resistant protection, and UL-listed GFCI certification context under UL 943. It is suitable for contractors, distributors, property managers, and project buyers sourcing code-oriented 20A exterior GFCI replacements for North American installations.
Outdoor WR TR GFCI Features
| Product Code | WTST20 |
| Certified Safety | UL, cUL |
| GFCI Type | Self-Test GFCI, Class A GFCI |
| Voltage | 125V |
| Amperage | 20A |
| NEMA | 5-20R |
| Color | White,Ivory,Almond,Black,Grey,Brown,Graphite |
| Finish | Satin |
| Operating Temperature | -35C to 66C(-30F to 150F) |
| Application Sector | Commercial, Multi-Dwelling Unit, Residential |
| Features | Alarm, Self-Test |
| Wiring Method | Back Wire and Side Wire |
| Pole | 2 |
| Wire | 3 |
| Wall Plate Included | Yes |
| Number of Receptacles | 2 |
| Standards & Certifications | UL/CSA, NEMA WD6 |
| Grounding | Self Grounding |
| Trip Level | Class A, 5mA plus or minus 1mA |
| Tamper Resistant | Yes |
| Weather Resistant | Yes |
| Own US Patents | Yes |
| Face Material | Thermoplastic |
| Body Material | Thermoplastic |
| Terminal | Brass-Hot, Green-Ground, Silver-Neutral |
| Country of Origin | China |
Frequently Asked Questions (FAQ)
What does WR and TR mean on a 20A GFCI receptacle?
WR means weather resistant, indicating a receptacle design intended for more demanding damp or wet-location exposure conditions, while TR means tamper resistant, indicating internal shutters that help reduce the risk of foreign-object insertion.
What is the T-slot on a 20A weather-resistant GFCI?
The T-slot is the identifying face feature associated with the NEMA 5-20R configuration, which distinguishes a 20A receptacle format from a standard 15A format.
Do I still need an in-use cover with a 20A WR GFCI?
In many outdoor wet-location applications, a weather-resistant receptacle does not replace the need for the correct weatherproof cover. Final cover requirements should be checked against the installation environment, the applicable code rules, and the locally adopted NEC edition.
Can I use a 20A weather-resistant GFCI receptacle indoors?
It can be used in indoor projects if the product rating and project specification are appropriate, but WR construction is typically selected when exterior, damp, or harsher environmental exposure is a concern.
How do I read the wiring diagram for a 20A outdoor GFCI?
The wiring diagram is used to identify line and load terminal relationships and support correct installation planning. Final wiring should always follow the exact diagram and instructions supplied with the product.
What are the NEC considerations for installing a 20A weather-resistant GFCI receptacle outdoors?
Outdoor suitability should be reviewed against the actual installation location, NEC 406.9 requirements for damp or wet locations, NEC 210.8 GFCI protection requirements, and the locally adopted code edition before installation.
Typical Applications
Bathrooms
NEC mandated wet location protection for hospitality and malls.
Kitchens
Reliable safety for general-use countertops near sinks.
Laundry Areas
Rugged protection for damp basements and vehicle service areas.
Multi-Unit Housing
Cost-effective, UL-listed safety for large-scale apartments.
Product Overview
5-Step Quick Wiring Guide for GFCI Receptacles
This is a general wiring reference for standard U.S. GFCI receptacle installation. Always turn off power first and verify local code and product-specific instructions before installation.
- Turn Off Power: Switch off the breaker and verify the electrical box is de-energized with a voltage tester.
- Identify LINE and LOAD: Locate the incoming power cable for the LINE terminals. If a second cable feeds downstream receptacles, identify it as LOAD and use it only when downstream GFCI protection is required.
- Connect the LINE Wires: Connect the incoming hot wire to the brass LINE terminal, the incoming neutral wire to the silver LINE terminal, and the ground wire to the green grounding terminal.
- Connect LOAD Only If Needed: If downstream protection is required, connect the outgoing hot wire to the brass LOAD terminal and the outgoing neutral wire to the silver LOAD terminal. Do not reverse LINE and LOAD.
- Mount and Test the GFCI: Fold the wires neatly into the box, mount the receptacle and wall plate, restore power, press RESET, then press TEST to confirm proper operation before resetting again.
