Outdoor generator inlet boxes provide a safe, convenient connection point for tapping into a generator’s power outdoors. Properly installed inlet boxes feature weatherproof enclosures that house a generator transfer switch, receptacles, and inlet to integrate generator current with your home or building’s electrical system. Choosing the right size inlet box with sufficient amperage and wattage capacity ensures your generator can handle the electrical load. Additional outlet boxes paired with inlet boxes supply power directly to outdoor areas without routing through the electrical panel. With integrated safety features like whole house surge protection, outdoor inlet boxes simplify running appliances and equipment from a portable generator during outages. Professional installation ensures your outdoor generator setup meets code while delivering reliable performance for backup or recreational power needs. Investing in a durable, high-quality inlet box gives you a long-lasting outdoor generator connection tailored to your property’s electrical demands.
Our Top Picks For 2025
Rophor 50 Amp Generator Power Inlet Box, NEMA SS2-50P
Heavy duty 50 amp generator inlet box allows you to safely connect a generator to your home’s electrical system. Weatherproof design for outdoor installation.
The Rophor 50 Amp Generator Inlet Box is the ideal way to hook up a generator to your home during power outages. This heavy duty inlet box can handle up to 12500 watts and 250 volts, providing ample power for emergency backup. Key features include:
- NEMA SS2-50P plug fits standard 50 amp generator cords
- Weatherproof design for outdoor installation
- Powder coated steel resists rust and corrosion
- Removable front panel for easy wiring access
- Built-in knockouts for conduit installation
With its durable construction and generous power capacity, the Rophor 50 Amp Inlet Box delivers reliable performance when you need it most. Install this inlet box for a convenient, code-compliant way to connect your generator during power failures.
Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box
The Reliance Controls PB50 is a durable, weatherproof 50-amp power inlet box designed for convenient generator connections. Made in the USA by a trusted brand, this NEMA 3R inlet box is ideal for whole house backup power.
The Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box provides a reliable outdoor connection point for your portable generator. Made by Reliance Controls, a leader in transfer switches and power inlet boxes since 1909, this rugged inlet box is designed for years of trouble-free generator hookups.
Key Features and Benefits:
- For indoor or outdoor use with specific transfer switches, manual transfer panels and generator-ready load centers
- Outdoor, raintight NEMA 3R non-metallic power inlet box
- Maximum generator running watts: 12,500
- Maximum generator input: 50A@125/250VAC
- Intended for use with 8 AWG 75 degrees C insulated wire
- Zinc-plated steel construction built to last
- Front-facing inlet protected by a weatherproof spring cover
- Easy to connect and disconnect generator cable
With robust construction and convenient front access, the Reliance Controls PB50 provides a reliable outdoor connection point for quickly hooking up your portable generator during power outages.
OUTPRIZE 30 Amp Generator Inlet Box
The OUTPRIZE 30 Amp Generator Inlet Box is an outdoor waterproof power inlet box, pre-drilled for ease of installation. Ideal for outdoor use, it is capable of handling up to 7500 Watts and features a reliable NEMA L14-30P 4 Prong plug.
The OUTPRIZE 30 Amp Generator Inlet Box is a highly functional accessory for your generator, designed to streamline power management in outdoor settings. This product is built with a NEMA L14-30P 4-prong plug and can handle up to 7500W and 30 Amps, perfect for heavy-duty usage.
Key Features and Benefits:
- Outdoor Durability: The power inlet box features steel construction with an anti-rust coating, providing robust protection against wind, rain, and rust.
- Pre-Drilled Design: The box is pre-drilled, eliminating the need for drilling and possibly damaging the box. It simplifies the installation process, making it hassle-free.
- Enhanced Safety: The product is designed for 125/250V and undergoes rigorous ETL certification, guaranteeing top-notch quality and user safety.
- Green Safety Light: A green indicator on the flip cover allows easy verification of correct power connection.
- 1-Year Warranty: The OUTPRIZE inlet box comes with a 1-year warranty, offering peace of mind for users.
WELLUCK 30 Amp Generator Inlet Box
Heavy duty 30 amp 4-prong generator inlet box by WELLUCK, rated for 7500W. Weatherproof NEMA 3R metal enclosure designed for outdoor use. Includes generous wiring space and multiple knockouts for easy installation. ETL listed for safety.
The WELLUCK 30 Amp Generator Inlet Box provides a convenient outdoor connection point to hook up a portable generator to your home’s electrical system. This heavy duty inlet box features a weatherproof NEMA 3R metal enclosure designed specifically for outdoor installations.
Key Features:
- Rated for 30 amps at 125/250 volts, supports up to 7500 watts
- NEMA L14-30P plug fits standard 4-prong 30 amp generator cords
- Weatherproof metal housing with foam gaskets protects against the elements
- Multiple 1.2″ knockouts on 4 sides for flexible wiring options
- Generous internal space accommodates thick 10 AWG wires
- ETL listed for safety and compliance with electrical codes
- Made from durable and corrosion resistant materials
- Easy open clamshell design with lockable cover
With its rugged construction and ample capacity, the WELLUCK generator inlet box provides a reliable outdoor connection point for quickly restoring power to your home during outages.
TOOLIOM 30 Amp Generator Inlet Box
This 30 amp, 125/250 volt generator inlet box by TOOLIOM allows you to connect a portable generator up to 7500 watts to your home’s electrical system. The weatherproof, rustproof metal housing has a flip-up cover and LED power indicator light for safety.
The TOOLIOM 30 Amp Generator Inlet Box is designed to provide a convenient outdoor connection point for a portable generator. This heavy-duty inlet box features:
- NEMA L14-30P twist-lock style connector rated for 30 amps and up to 7500 watts
- Durable and weatherproof steel housing with rustproof, raintight metal cover
- Removable knockouts on back, bottom, sides for flexible conduit installation
- Flip-up cover creates watertight seal when not in use
- Green LED power indicator light glows when unit is powered
- ETL listed for safety
With its solid construction and flexible installation options, the TOOLIOM 30 Amp Generator Inlet Box makes it easy to hook up a portable generator to your home electrical system for backup power during outages. The L14-30P connector ensures a secure connection with your generator, while the weatherproof housing allows for convenient outdoor mounting.
Flameweld 50 Amp Generator Inlet Box
The Flameweld 50 Amp Generator Inlet Box is a robust and convenient solution for connecting your generator to your home’s power system. ETL certified and designed for outdoor installation, it ensures safe and efficient power transfer while protecting against weather damage.
The Flameweld 50 Amp Generator Inlet Box is a reliable accessory for your generator setup. Engineered to facilitate an efficient connection between your generator and your home’s electrical panel, this inlet box is designed to handle power loads up to 12500 watts at 125/250 volts.
Key Features and Benefits:
- This certification gives you the trust that this inlet box meets industry safety standards, ensuring reliable performance.
- The pre-drilled holes provide easy installation and a secure fit for your generator cord, removing the need for additional tools.
- A green indicator light illuminates when the power is on, providing a clear, visual signal of active power and enhancing safety.
- The anti-rust coating and waterproof flip cover ensure durability and longevity in all types of weather, protecting your connections against dust, moisture, UV rays, and other environmental damage.
- With 50% more wiring space, this inlet box makes placement and wiring easier and more flexible, accommodating different installation scenarios.
The Flameweld 50 Amp Generator Inlet Box is not just a practical addition to your generator setup; it’s an investment in safety, efficiency, and convenience. Its robust construction and thoughtful design details are tailored for long-term performance, ensuring that your generator delivers power when you need it most. Whether you’re preparing for a potential power outage or planning a recreational outdoor event, this inlet box will serve as a trusted partner in delivering safe and reliable power.
Generac 6340 30-Amp Outdoor Generator Power Inlet Box
The Generac 6340 is a weatherproof, 30-amp outdoor power inlet box designed to safely connect portable generators up to 7500 watts to your home’s electrical system. Made by Generac.
The Generac 6340 30-Amp Outdoor Generator Power Inlet Box provides a convenient and secure way to connect your portable generator to your home during power outages. This NEMA L14-30 outdoor power inlet box is made of durable, non-metallic resin that withstands the elements. It is UL listed for safety and backed by Generac’s 2-year limited warranty.
Key Features and Benefits:
- Convenient Outdoor Connection: Install this generator power inlet box on the exterior of your home to easily connect your portable generator outside.
- Weather Resistant: Constructed of NEMA 3R-rated non-metallic resin, this inlet box withstands rain, snow and other outdoor conditions.
- Secure Connection: Use a Generac power cord to connect generators up to 7500 watts to the L14-30 inlet box for safe and reliable power transfer.
- Wide Compatibility: Works with most generators equipped with 30-amp outlets, including Generac, Champion, DuroMax, Westinghouse and more.
- Quality Assurance: UL listed for safety and backed by Generac’s 2-year limited warranty for peace of mind.
The Generac 6340 provides a secure outdoor connection point to safely power your home with a portable generator during outages. Its weatherproof design and wide compatibility make it easy to use with most generators.
STARELO 30 Amp Generator Power Inlet Box NEMA L14-30P
The STARELO 30 Amp Generator Power Inlet Box NEMA L14-30P provides a safe and convenient solution for connecting portable generators to homes or businesses. It is designed to withstand outdoor conditions, offering dustproof and weatherproof features.
The STARELO 30 Amp Generator Power Inlet Box NEMA L14-30P is an integral component when setting up a backup power source during power outages. With its ability to handle 125/250 volts at 7500W, this inlet box is capable of accommodating heavy power demands from generators or welding machines.
Key Features and Benefits:
- ETL Listed: Ensures the product meets necessary safety standards, enhancing user confidence in its performance and safety.
- Dustproof and Weatherproof: Offers durability in diverse weather conditions, making it suitable for outdoor installations.
- User-Friendly Design: Comes with a protective box made of high-quality plastic, ensuring the longevity of the socket and protection from dust and radiation damage.
- Versatility: Can be used with generator transfer switches or as a connection for generators or welding machines, enhancing its usability across various applications.
In conclusion, the STARELO 30 Amp Generator Power Inlet Box NEMA L14-30P stands as a robust solution for safely connecting power sources to your property. Its durability, safety certifications, and versatile usage make it a reliable choice for both residential and commercial use.
Weekender by for current ParkPower 30ARV
D role is to have an intelligenturable 30A 125 conversation toV power the best of my abilities inlet designed. for RV and marine applications. Features UV stabilized polyester housing, nickel plated brass contacts, and stainless steel hardware for corrosion rugged inlet box is designed to withstand harsh outdoor environments while providing reliable power transfer.
Key Features and Benefits:
- UV stabilized polyester housing for durability and long life
- Nickel plated brass contacts and stainless steel hardware resist corrosion
- Hinged cover stays open when lifted and closes softly when dropped
- Integrated strain relief allows for flexible wiring from multiple positions
- Meets UL, CSA, and ABYC safety standards
With robust construction and thoughtful design features, the Weekender 30ARVIB power inlet makes connecting to shore power simple and convenient. Its corrosion-resistant materials stand up to marine environments, rain, snow, and sun exposure. If you need a heavy-duty 30A power inlet, this marine-grade option from ParkPower is an excellent choice.
Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box
The Reliance Controls PB50 is a durable, weatherproof 50-amp power inlet box designed to safely connect a portable generator to your home’s electrical system. Made in the USA by Reliance Controls Corporation.
The Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box is an essential accessory for connecting a portable generator to your home during power outages. This heavy-duty inlet box is designed for outdoor installation and made with weatherproof, corrosion-resistant materials to withstand the elements.
Key features and benefits:
- NEMA 3R rated for outdoor and wet location use
- Durable powder coated steel housing
- Spring-loaded inlet cover to protect against moisture and debris
- Large wiring cavity for easy installation
- Pre-drilled knockouts for conduit connections
- Accepts up to 50-amp generator connection
- Listed to UL safety standards
With its rugged construction and convenient design, the Reliance Controls PB50 provides a safe and reliable power inlet solution for your generator backup power needs. This Made in USA product comes with the quality and performance Reliance Controls is known for.
