NEMA L14-30P to TT-30R 4 Prong 30A Locking Male Plug to 30A TT-30R Female RV Outlet
This heavy-duty power adapter converts a NEMA L14-30P male plug (4-prong twist-lock, common on generators for 30A/125-250V output) to a NEMA TT-30R female receptacle (3-prong RV standard for 30A/125V shore power). It’s designed for safely connecting portable generators to RVs, campers, caravans, trailers, or boats, allowing full 30A power delivery for boondocking, tailgating, or emergency backup without needing a full extension cord. The 4-prong L14-30P provides neutral, hot, ground, and a second hot for 240V capability, but the TT-30R outputs only 120V (single-phase), so it’s ideal for 120V RV systems—high-draw appliances like AC units or microwaves can run without derating. ETL Certified (Intertek tested) ensures compliance with UL 498 and UL 62 standards for weather resistance, impact, and overload protection.
Key Use Case: Plug the L14-30P male end into your generator’s 30A outlet, then connect your RV’s TT-30P cord to the TT-30R female end. Perfect for weekend warriors or off-grid setups, but verify generator output is 120V/30A to match RV needs.
Technical Specifications
- Male: NEMA L14-30P (4-prong twist-lock, 30A/125-250V, X/Y hot, Z neutral, W ground terminals)
- Female: NEMA TT-30R (3-prong straight-blade receptacle, 30A/125V, hot/neutral/ground).
- Voltage Rating: 125V AC (output to RV; input supports 125/250V for generator compatibility).
- Current Rating: 30A maximum (full passthrough with no derating for 120V loads).
- Power Rating: 3750W maximum (at 125V).
- Internal Conductors: 10 AWG pure copper (4-conductor input to 3-conductor output; direct molded without flexible wire).
- Certifications: ETL Listed (primary)
- Material: Heavy-duty molded PVC housing; nickel-plated brass contacts for corrosion resistance; strain relief and ergonomic twist-lock handle.
- Color: Standard black; custom colors available (e.g., yellow for visibility, any Pantone match via OEM).
Intended Use & Applications
- Safely powering your RV from a portable generator equipped with an L14-30R outlet during camping, tailgating, or power outages.
- Provides a compact, reliable, and safety-certified connection for critical power needs.
⚠️ Safety Notes:
- Voltage Matching: Outputs 120V only—use with 120V RV setups; bridging hots (X/Y) internally for single-phase delivery from 240V inputs. Verify generator wiring to avoid phase imbalance.
- Maintains full grounding and neutral bonding for surge and shock protection; many include integrated LED indicators for power confirmation.
- ETL certification ensures crush-proof construction and UV resistance; inspect for cracks before use and avoid exceeding 30A loads (e.g., stagger high-draw appliances).
- Complies with NEC Article 551 for RV/generator temporary connections; not for indoor/dry-only or permanent installs. Custom models may include optional circuit breakers.
