NEMA L14-30P to 4X 5-20R/5-15R Generator Power Adapter
This compact, block-style generator distribution adapter (direct-molded connector with no flexible cable) features a NEMA L14-30P male plug (4-prong twist-lock, standard on 30A generators for 125/250V output) integrated directly into four NEMA 5-20R/5-15R female receptacles (T-slot household outlets rated for 20A/125V, compatible with both 15A and 20A plugs). It’s designed for safely powering multiple 110V/120V devices—like power tools, lights, chargers, fridges, or fans—from a single generator outlet in tight spaces, such as during camping, construction sites, emergencies, or RV tailgating. The no-cable block design provides a secure, low-profile connection to prevent accidental unplugging, with the multi-outlet head expanding one 30A source into four household ports without added bulk. ETL Listed (Intertek certified) verifies compliance with UL 498 and UL 62 standards for electrical safety, including grounding, weather resistance, and overload protection. The molded construction ensures durability for outdoor use, with options for custom lengths if needed, but this version prioritizes portability.
Key Use Case:Insert the L14-30P male end into your generator’s 30A outlet, then plug up to four household devices directly into the integrated 5-20R/5-15R outlets for instant distributed power. Perfect for job sites or events where space is limited and one generator needs to feed multiple tools without extension cords.
Technical Specifications
- Male: NEMA L14-30P (4-prong twist-lock, 30A/125-250V, two hots/neutral/ground);
- Female: 4x NEMA 5-15R/5-20R (T-slot receptacles, each 20A/125V, accepts 15A or 20A plugs).
- Voltage Rating:125V AC (120V compatible; input supports 125/250V for generator flexibility).
- Current Rating: 30A maximum total (input passthrough; each outlet rated 20A, but distribute loads evenly to avoid exceeding 30A aggregate).
- 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
- Job Sites: Power multiple tools (saws, drills, chargers, work lights) from a single generator outlet.
- Emergency Power at Home: Run essential appliances like refrigerators, fans, and communication devices during a power outage.
- Events & Recreation: Ideal for powering equipment at food trucks, concession stands, outdoor markets, tailgating parties, and campsites.
- Workshop: Create a convenient multi-outlet station from a single high-capacity source.
⚠️ Critical Safety Warnings & Usage Instructions
- POWER MANAGEMENT IS ESSENTIAL: This is a POWER DISTRIBUTION ADAPTER, not a power multiplier. The total current drawn from all four outlets combined MUST NOT exceed the adapter’s 30-amp input rating.
- Example: If you are drawing 15 amps from two outlets, you are already at the 30-amp maximum. The built-in breaker will trip if you exceed this limit.
- Understand the Power Source: The L14-30P plug provides 125/250V. This adapter correctly splits this into separate 125V legs, supplying 120V to the standard outlets.
- Use the Built-in Breaker: The integrated 30-amp circuit breaker is your primary safety device. If it trips, unplug devices and reduce the total load before resetting.
- Do Not Use with an RV’s 30-amp TT-30 Inlet Directly: This adapter is designed to plug into a Generator (L14-30R outlet) and power devices with standard plugs. To power an RV from a generator, you would need a different adapter (e.g., L14-30P to TT-30R).
- Intended for Temporary Use: This adapter is for temporary power distribution. Keep it dry and do not use it in wet conditions. Always inspect for damage before use.
NEMA L14-30P Power Adapter Manufacturer

Our Advantages as a Leading Power Adapter Manufacturer
With 15+ years as a dedicated power cord factory, we excel in producing NEMA L14-30 to NEMA 5-15, 5-20 T-Blade Plug Adapter with ETL 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!





