Are you trying to find generator inlet boxes among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling generator inlet boxes on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 28 hours of research and did 39 generator inlet boxes tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best generator inlet boxes you can buy today
- GREAT FOR OUTDOOR: The power inlet box features durable steel construction with an anti-rust coating, providing robust protection against wind, rain, and rust. Additionally, it incorporates a flip design with weatherproof foam insulation, specifically designed to prevent dust and humid air infiltration. This design renders it ideal for outdoor applications, enabling it to endure challenging weather conditions.
- PRE-DRILLED DESIGN: No knockouts, no drilling required. The box features 4 pre-drilled holes, each covered by a removable cover, which can easily meet your specific wiring requirements without causing any damage to the box, hassle free installation!
- ENHANCED SAFETY: OUTPRIZE generator inlet box is designed for 125/250V and capable of handling up to 7500W and 30 Amps, features a reliable NEMA L14-30P 4 prong plug, and fits a 10 AWG wires. Rest assured, all these specifications undergo rigorous ETL certification, guaranteeing top-notch quality and user safety.
- GREEN SAFETY LIGHT: With a clear green indicator on the flip cover, you can easily verify the correct connection of power, "Green-On" means successful.
- WARRANTY: OUTPRIZE inlet box provides 1-year warranty, please feel free to contact us if you encounter any product issues, our team is on standby for you.
- Material Type: Powder Coated Steel
- 🛡️ Keep your generator safe and dry with this rain-tight, rust-proof power inlet box.
- 🛡️ Designed for outdoor use, this electrical inlet is watertight and includes a 30 Amp L14-30 generator cord.
- 🛡️ Compatible with Pro/Tran transfer switches, panel/link transfer panels, and generator-ready load centers.
- 🛡️ Our exclusive patented design provides ample wiring space and easy rough-in, with a removable face for simple placement and wiring.
- ETL Certification: 125/250V, 12500W, 50Amp generator inlet box with CS6375 inlet generator plug, suitable for all 50 amp NEMA SS2-50 generator cord. This pb50 power inlet box is a good partner for the generator to accommodate the power cord. It is designed to be installed in outdoor areas where generators are used outdoors, and also be ideal for backup power during power outages/bad weather, etc.
- Best Choice for Outdoor: the whole body of GeepKey generator power inlet box is covered with anti-rust coating, with powerful features such as wind, rain and rust! In addition, it adopts a flip design (with weatherproofing foam inside), which is dedicated to preventing dust and humid air; it can provide the best protection in any bad weather!
- Green Safety Light: There is a clear green warning light on the flip cover, which will be lit when the power connection is successful; Comparing with the old version, this generator inlet 50 amp plug can see a clearly visible green light indicator when working (especially in Night and dark areas), thus providing the best performance and higher security
- Large Space with 4 Way Connection: The large space of 6.1*4.1*3.1 inches allows you to wire more neatly; the heat dissipation effect is better, and it has a longer service life. The front panel can be removed, making installation more portable. And the 1.2-inch combination hole with 4 areas (left, right, bottom, rear) can be directly connected to the switch and electrical panel from multiple directions.
- 100% satisfactory service: This product is an upgraded model developed by us in accordance with market needs. Its performance, material, life, safety and other aspects are optimized、upgrade by our professional engineers, and we provide customers with 18 Month’s high-quality after-sales service; if you have any questions, please feel free to contact us.
- Important❗❗We are committed to providing safer power transmission and make it comply with ETL standards, so we have set a more solid knockout to ensure that it is not easy to be penetrated to improve safety. It is necessary to use professional tools to penetrate (such as bi-metal hole saw/knockout punch); If you encounter any problems, please feel free to contact us!
- ❗❗If you damage the 50 Amp generator plug because you can’t get through the Knockout, you can try to contact us first (email or through the seller’s contact tool), we will provide you with a replacement or a full refund!
- 【Safety Certification】ETL Listed 125V, 3750W, 30 Amp generator inlet box with NEAM L5-30P generator plug, suitable for all 3 prong NEMA L5-30R generator cord.
- 【LED Power Indicator】There is a green light power indication on the generator inlet box.It will be lit when the power connection is successful, which provides the best performance and higher security especially working at night or in dark areas.
- 【Larger Wiring Space】TOOLIOM 30 amp generator power inlet box equipped with enough wiring space, and the front of the power inlet box is removable for easy wiring access and installion.The heat dissipation effect is better to ensure a longer service life.
- 【4 Direction Connection】TOOLIOM power inlet box is the best partner for the generator to accommodate the power cord. 4 areas (Left, Right, Bottom, Back) on the generator power inlet box with 1.2" combination hole, you can wire from any directions.
- 【Weatherproof & Rustproof】TOOLIOM generator inlet box is covered with anti-corrosive coat.The flip design can effectively resist dust and humid air.This power inlet box for generator will always be protected even in bad weather.
- Generator Power Inlet Box: Power inlet box is an outdoor/watertight electrical inlet for a 30 Amp L14-30 generator cord. 125/250V, 7500W. Max wire Gauge:10AWG. It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
- Safety Assurance: It is designed to be located outdoors where the generator is running to prevent dangerous carbon monoxide fumes from the generator from entering your house. This inlet box is then safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. Our generator power inlet box passed the certifications of ETL.
- Best Space Design & Easy to Install: Compared with ordinary boxes, we have increased the wiring space by 50%. There are generous wiring space and facilitates through-in. The front of the box is removable for easy placement and wiring.
- Weatherproof & Anty-rust: The front entry inlet has a weatherproof spring cover which closes when not in use to protect the inlet from the elements. The surface of the power inlet box with anti-corrosive powder-coat paint which can resist weather damage like rain, UV, will not rust.
- Green Light Indication: New upgraded version provide a Green Power Indicator. There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. It gives a visibly clear indication when it is working and inlet is ready to use, which provides optimum performance and added safety.
- 【ETL Listed】 High quality standards. 10 gauge 4 prong SJTW 125/250V up to 7500W, NEMA L14-30P male to L14-30R female twist lock, ETL Listed.
- 【Emergency Ready】 This generator extension cord with inlet box provides a safe and convenient way to connect your generator to the manual transfer switch on your house, providing the power you need in bad weathers. Also for house building.
- 【Pre-Drilled】The 4 knockouts were replaced by rubber plugs which are easy to remove directly without damaging the power inlet box. Never need a special tool (such as driller/knockout punch) to drill. Easy to Open!
- 【Heavy Duty】 Pure copper wiring coated with a heavy duty flame retardant, heat resistant, UV resistant PVC, provides protection from rain, wind, snow, soil, and rocks for emergency ready.
- 【Easy to Organize】 Comes with a lovely storage bag and adjustable cord organizer that makes carrying and storing simple after use.
- 【ETL Certified】30A, 125/250V, 7500W, NEAM L14-30 inlet generator plug, suit for all 30 amp NEMA L14-30 generator cord. Max wire Gauge:10 AWG. The best partner for the generator to the house power cord, ETL Certified.
- 【Heavy Duty】Weatherproof & Rust Resistance with the rubber flip cover. The surface of the metal body is covered by an anti-rust powder coating that can resist weather damage like rain, snow, and UV, designed for outdoor use.
- 【Larger Space】Large space makes wiring convenient and good for heat dissipation.
- 【Easy to Install】1.2" hole drilling position on 4 areas: Left, Right, Bottom, and Back, easy to connect to transfer switch and electric panel. Also the newly designed 1.2" hole is easy to open, and the front panel is detachable for easy installation.
- 【Emergency Ready】 A must-have for emergency ready.
- Safety Certificate: ETL Listed NEMA 3R/PB30 electrical inlet designed for all 30 Amp 4 Prong NEMA L14-30P generator cords. 125/250V, 7500W. Maximum support for 10 AWG wires. When insufficient power and bad weather such as tornadoes and blizzards, continuous backup power can be provided and maintained from the generator outside.
- Larger Space & Longer Life: Compared with the old version, we have increased the wiring space by 50%, can be disassembled from the front, making the whole installation easier and faster. Better heat dissipation and longer service life.
- 4 Ways to Attach: 1.2" drilled holes in 4 areas (Left, Right, Down and Rear) allow direct connection to multi-directional transfer switches and electrical panels. No more seriously bent wires.
- Weatherproof & Antirust: The metal body of the entire generator power inlet box is covered with antirust coating can effectively resist rain, storm, ultraviolet rays and other weather damage. Adopts a clamshell design with waterproof foam inside can prevent wind and moisture. Any harsh environment can be protect in all weathers.
- WELLUCK Sincere Service: This 30a generator inlet box is an upgraded model produced after repeated research and testing according to market demand. We are committed to providing customers with a better experience. If you have any questions, please feel free to contact us!
- 🚩【Pre-drilling Design】: It is easy to remove and replace the wiring caps without using special tools (such as driller/knockout punch) or finding an electrician . RVMATE pre-drilling generator inlet box saves your time and money.
- 🚩【Benefit】: 125/250V 6250/12500W 50A RVMATE generator inlet box is designed for the use with the transfer switches or panels and generator-ready load centers. And It also is designed be installed outdoors in an open area where the generator is being used to avoid carbon monoxide hazard.
- 🚩【Safety Light Indication】: there is a clear LED power indicator on the flip cover. Compared with the old version, the green indicator lights up when the power is successfully connected, which provides the best performance and higher security（especially working at night or in dark areas).
- 🚩【Enough Space】: The internal space of our power inlet box is 50% larger than that of the ordinary power inlet box. It provides generous wiring space. And the front of the box is removable for easy placing and wiring.
- 🚩【Weatherproof & Anti-rust】: The power inlet box is constructed of steel with durable, anti-corrosive powder-coat paint. And when not working, the weatherproof flip cover can be closed to prevent moisture front entering the connector inlet.
- 30 Amp, 125/250V, NEAM L14-30 inlet plug,Generators Up to 7500 Running Watts PB30 30Amps 3R NEMA Power Inlet Box.ETL listed.
- The generator transfer switch box has design patent, waterproof flip lid,easy to use, higher security,effective waterproof and dust-proof, ensuring safety use in any environment. anti-corrosive powder-coat paint,anti-corrosive powder-coat paint,rust proof
- The generator inlet box has generous wiring space and facilitates through-in; the face of the box is removable for easy placement and wiring
- The power inlet box designed to be installed outdoors in an open area where the generator, this watertight electrical inlet box eliminating the need for cords running through windows or doors.Great for backup power during a power outage
- Sturdy structure,easy to install.Three knockouts are located on the inlet,push-in wire connections,there are pre-punched sturdy screw holes for easy mounting on the wall
- [Empower with Efficiency]: When you need a generator power source outdoors, depend on the BISupply Generator Power Inlet Box to provide a safe and reliable source of power; Generator box features a green light indicator to show when the generator is powered on
- [Built to Last]: No need to worry about this generator connection box rusting and cracking after extended, repeated use; 30 amp generator inlet box is constructed of copper and coated in gray anti-corrosive powder-coat paint; Weatherproof spring cover protects inlet while not in use
- [Easy to Install]: 30 amp inlet box is designed with 3 inches (7.6cm) of space behind the inlet source so that you can have ample space for wiring; 30 amp power inlet box also features removable front for easy placement when installing
- [For Your Projects]: Use this generator inlet box 30 amp power box for using your generator outdoors; 30a generator inlet box will fit 3 prong L5-30P connections when you need a backup generator if there is a power outage in your workplace or home; Designed for 125 volt applications
- [Perfect Size]: 30amp generator inlet box measures 4 x 4 x 6 inches (10 x 10 x 15cm); Inlet box weighs just 2.3 pounds (1.04kg) for easy transportation to your worksite; Package includes 1 outdoor power inlet box for your backup generators; Includes installation instructions
- 【Generator Cord 30 Amp】Plug (Male): NEMA L14-30P, 30-Amps, 125/250-Volts,Cord type: STW 10/4 AWG,Maximum Wattage: 7500 Watts,Length:15 Feet;Receptacle (Female): NEMA L14-30R, 30-Amps, 125/250-Volts, Twist Locking Style
- 【Generator Power Inlet Box 30 Amp】 30A Generator Cord Inlet Box PB30, 125/250V, 7500W, designed for all 30 amp NEMA L14-30 generator cord. It’s one great partner for generator to be installed outdoors in an open area, providing and maintaining continuing backup power supply, especially when short of power, terrible weather
- 【ETL Listed】Our Generator Cord and Power Inlet Box has passed the certification of ETL.Our PB30 power inlet box and Generator cords 30 amp is also one good choice for the generator 30Amp 7500W.It is high quality with the features of wind-proof, rain-proof. You can accommodate our generator cord to use with inlet box to match your generator
- 【Widely Application】Perfectly suitable for camping, tailgating, outdoor and sporting in spite of hurricane season and other bad weathers
- 【Warm Tip】Our aims are to provide much variety of items in the field of RV, Welding,and other parts.If there are any questions or needs,please feel free to tell us
- Accepts Siemens HR Series Conduit Hubs
- Complete with Pre-Wired Flanged Inlet Receptacle
- For use with EmerGen Switch Transfer Switches and matching Generator Receptacles
- Listed to UL-1008 requirements
- Rainproof generator power inlet box with cover
- 【Generator Power Inlet Box】Power inlet box is an outdoor/watertight electrical inlet for a 50 Amp SS2-50 generator cord. 125/250V, 12500W. It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
- 【Safety Assurance & ETL Certificate】It is designed to be located outdoors where the generator is running to prevent dangerous carbon monoxide fumes from the generator from entering your house. This inlet box is then safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. Our generator power inlet box passed the certifications of ETL.
- 【Best Space Design & Easy to Install】Compared with ordinary boxes, we have increased the wiring space by 50%. There are generous wiring space and facilitates through-in. The front of the box is removable for easy placement and wiring.
- 【Weatherproof & Anty-rust】The front entry inlet has a weatherproof spring cover which closes when not in use to protect the inlet from the elements. The surface of the power inlet box with anti-corrosive powder-coat paint which can resist weather damage like rain, UV, will not rust.
- 【Green Light Indication】New upgraded version provide a Green Power Indicator. There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. It gives a visibly clear indication when it is working and inlet is ready to use, which provides optimum performance and added safety.
- Knockouts Notice: No Knockouts, No drilling required. Only need to unscrew the nut inside of the BESYL 50 amp generator inlet box to remove and replace the wiring caps.
- ETL LISTED. 50A, 125/250V, 12500W Power Inlet Box, NEMA PB50, CS6375, 80SS2-GYBX or SS2-50P generator inlet plug, compatible with all 50 Amp NEMA SS2-50P generator cord.
- It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
- There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. By the green light, we can know it is working, which provides optimum performance and added safety. It is updated and safer than other style 80SS2-GYBX, PB50 etc.
- The inlet box is constructed of steel with rugged, anti-corrosive powder-coat paint and has a flip lid with green light to prevent moisture front entering the connector inlet when not in use.
- For Outdoor Generator Applications: The Veepeak NEMA 3R power inlet box is an ideal and safe way when connecting electricity to your RV hook-up, or portable generator for reliable backup power. It is designed to connect a generator cord to a manual transfer switch or transfer panel.
- ETL Listed Power Inlet Box: NEMA SS2-50P flanged inlet plug (CS6375), rated for 50 ampere at 125/250 volt AC, 6250/12500 Watts, wiring gauge: 4AWG to 8 AWG, dimensions: 4.2” x 3” x 6.1”. ETL Listed (conforms to UL & CSA standard).
- Easy to Install: Generous wiring space and removable front face allow for easy and neat installation, plus better heat dissipation and longer lifespan. There are four pre-cutted knockouts for direct connection to multi-directional transfer switches and electrical panels. No more frustrating drilling needed, and no more bent wires.
- Heavy Duty & Weatherproof: The inlet box is constructed of steel with rugged, antirust coating which can effectively resist rain, UV and other elements. It also features a flip cap with waterproof foam to prevent moisture or dust from entering the inlet when not in use.
- Peace of Mind: it comes with a green led indicator light on the flip cover, have-duty & watertight construction for added safety, plus Veepeak’s one-year hassle-free replacement warranty.
- Specifications: NEMA L14-20P, one Power Inlet Box with protective box.
- Parameters: ETL Listed, 125/250V, 20A, 3 Pole 4 Wire Grounding Type.Protection class: IP66.
- Attention：The reserved thread on the product is metric thread,if you needed,it can achieve IP66 protection level with the M25/M32 metric waterproof connector in the STARELO store.
- Design: The socket comes with a protective box, which is made of high-quality plastic. When not working, cover the cover to prevent dust from entering, reduce the damage caused by radiation to the human body, and have waterproof function.
- Applicability: Use with generator transfer switch,Used for the connection of generators or welding machines.
- Heavy Duty Power Cord: RVINGPRO NEMA 14-50P to SS2-50R generator cord is made of 100% copper conductor STW 6/3+8/1 AWG with flame retardant coating and PVC jacket. And it can handle generator up to 12,500 Watts.
- Upgraded Pre-Drilled Design: RVINGPRO 50 amp generator inlet box is designed with 4 pre-drilled holes distributing in 4 directions, which is real knockouts, no hassle drilling needed. You can easily open the hole with your fingers within only 30s.
- ETL Listed: Both of RVINGPRO 50 amp generator cord and inlet box have passed ETL certification, which are safe enough for outdoor use. It can work well in various terrible weather conditions,no matter hurricanes or snowstorm.
- Use with Ease: The twist locking ring on female plug to help keep dust and rain out of plug connection while the ergonomic finger grip on the male plug makes it easier for you to plug and unplug.
- What will You Get: 1 x 50 Amp Generator Cord (15FT) + 1 x 50 Amp Generator Inlet Box (Pre-Drilled) + 1 x Cable Tie + 1 x Storage Bag. Besides, we offer 1 Year Warranty and 90 days no reason to return service.
How to choose a good generator inlet boxes
Does the idea of finding a fantastic generator inlet boxes make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in generator inlet boxes. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top generator inlet boxes products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top generator inlet boxes on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top generator inlet boxes brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top generator inlet boxes based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the generator inlet boxes were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good generator inlet boxes, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your generator inlet boxes.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting generator inlet boxes for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our generator inlet boxes. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what generator inlet boxes should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on generator inlet boxes.
