NEMA 14-30P to14-50R Adapter
Connect your 50 Amp devices to a standard 30 Amp 4-prong dryer outlet. This NEMA 14-30P to 14-50R adapter is the perfect bridge for EV owners and RVers who need to access power from a 14-30R wall socket. Built with premium 10AWG copper and a rugged STW jacket to ensure a cool, stable connection.
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Plug: NEMA 14-30P (4-Prong Dryer Male)
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Receptacle: NEMA 14-50R (4-Prong EV/RV Female)
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Capacity: 30 Amp Max (7,500 Watts at 250V)
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Wire Gauge: 10 AWG / 4 Conductors (Pure Copper)
Versatile Power Solutions for Modern Needs
If your garage is equipped with a 4-prong dryer outlet (NEMA 14-30R) but your EV charger or RV uses a 14-50P plug, this adapter is your most cost-effective solution. Our NEMA 14-30P to 14-50R adapter allows for an immediate connection without the need for expensive electrical contractor visits.
Built with Expertise & Safety
Because this adapter connects a 50A receptacle to a 30A source, safety is our absolute priority. We’ve designed this cord with specific features to handle continuous loads:
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Full 4-Wire Connection: Unlike older 3-prong adapters, this features two hots, a neutral, and a ground, ensuring your equipment’s safety features remain fully functional.
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High-Heat Resistance: Utilizing 10/4 STW wire, the jacket is rated for 600V and up to 60°C (140°F), preventing melting or degradation during long EV charging sessions.
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Weather-Hardened Construction: The STW (Service, Thermoplastic, Weather-resistant) rating means this cord is safe for use in damp environments and resists oil, water, and UV damage.
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Molded Plug Design: The integrated handle design reduces physical stress on the wall outlet and the cord’s internal wiring, preventing “hot spots” caused by loose connections.
Technical Specifications
| Feature | Specification |
| Input Plug | NEMA 14-30P (30 Amp, 125/250V) |
| Output Receptacle | NEMA 14-50R (50 Amp, 125/250V) |
| Max Current | 30 Amps (Continuous) |
| Max Wattage | 7,500 Watts |
| Cable Type | STW 10AWG / 4C (10/4) |
| Jacket Color | Black (High-Visibility/High-Durability) |
| Certification | Manufactured with UL-listed components |
⚠️ Essential Safety Warning
Expert Note on Current Limiting:
The wall outlet providing power is rated for 30 Amps. While the adapter receptacle can physically accept a 50 Amp plug, you must manually limit your device’s draw to 24 Amps (80% of the circuit’s capacity) to prevent tripping the circuit breaker or overheating the wiring.
EV Owners: Set your car’s charging limit to 24A via the dashboard or app.
RV Owners: Be mindful of simultaneous appliance use (e.g., don’t run two A/C units at once).
Frequently Asked Questions (FAQ)
Q: Can I use this for Level 2 EV charging?
A: Yes! It is a popular solution for charging Teslas or other EVs from a dryer outlet. Just ensure you set your vehicle’s charging speed to 24 Amps.
Q: Does this adapter support 120V and 240V?
A: Yes. Since it is a 4-wire (14-series) configuration, it carries the neutral wire required for 120V electronics found inside RVs.
Q: Why is the wire 10AWG instead of 6AWG?
A: Since the input plug is limited to 30 Amps by the household breaker, 10AWG is the appropriate, safe gauge for this current level, making the cord more flexible and easier to handle than 6AWG.