NEMA TT-30P Male to TT-30R Female for RV Extension Cable
This heavy-duty 30 Amp RV extension cord features a NEMA TT-30P (male) to TT-30R (female) 3-prong configuration, designed specifically for recreational vehicles (RVs), travel trailers, campers, and marine applications. It provides a secure, weatherproof connection to shore power pedestals or generators, supporting up to 3750 watts at 125 volts. UL-listed for safety, these cords are built for outdoor durability in harsh conditions like rain, dust, and extreme temperatures. Custom lengths are available from manufacturers for tailored setups, such as extending from distant hookups or integrating with RV accessories, ensuring minimal voltage drop over distance.
Technical Specifications:
- Connectors: NEMA TT-30P (male, 3-prong) to NEMA TT-30R (female, 3-prong).
- Electrical Rating: 30A. 125V AC.3750W (calculated as 30A × 125V).
- Wire Gauge: 10/3 AWG (stranded copper conductors for enhanced flexibility and reduced voltage drop).
- Cable Type: PVC or Rubber 10AWG jacket with 3-conductor grounded design for outdoor durability.
- Temperature Range: -40°F to +140°F (-40°C to +60°C), suitable for extreme camping conditions.
- Standard Lengths: 15 ft, 25 ft, 30 ft, 50 ft, 75 ft, and 100 ft options for various RV site distances Available in custom lengths
- Compatibility: Optimized for RVs, travel trailers, campers, boat/marine setups, generators, and compatible EV chargers under U.S. and Canada standards.
| XH234 | TT-30P | 10/3 | SOW, SOOW, STW, STOW, STOOW | 30/120 |
| SPI 30P | TT-30P | 10 | ST, STW, STO, STOW, STOO, STOOW | 30A/120 AC |
| LA050A | RECREATIONAL VEHICLE PLUG | 10/3C | STW, STOW, STOOW | 30 |
Customization Options:
- TT 30P/R: Straight or angle plugs or receptacles,some models include LED power indicators
- Custom Options: Offer bespoke builds up to 150 ft+; specify length, jacket color (black/yellow standard), end configurations (e.g., pigtail options), or enhancements like illuminated ends. Low minimum orders for prototypes; lead times 1–3 weeks.
- Build-Your-Own Note: For DIY enthusiasts, components like bulk STW cable and TT-30 connectors can be sourced, but professional assembly ensures UL compliance.

RV Extension Cord Manufacturer
Our Advantages as a Leading Heavy Duty UL Listed RV Power Extension Cable Manufacturer
With 15+ years as a dedicated extension power cord factory, we excel in producing TT 30P, 30R RV plugs and extension socket with UL certified.
- Guaranteed Market Access: Our UL certification eliminates compliance risks, speeding up your product approval process in the United States and Canada.
- Precision Manufacturing: Produced in our ISO 9001-certified facilities with stringent quality control, including continuity, hi-pot, and insulation resistance tests.
- Customization & Support: We offer OEM/ODM services for custom lengths, colors, and packaging. Benefit from rapid prototyping, low MOQs, and dedicated engineering support.
- Cost-Effective Sourcing: As a direct manufacturer, we provide competitive pricing without compromising on quality or safety.
2-year industrial warranty included; free samples for qualified OEMs. Contact our team for quotes or custom power adapter, plug adapters, sockets adapter builds!

















