Best Outdoor Generator Inlet Boxes of 2025

"I found the box to be high quality and easy to install. It feels like it will keep the rain out nicely. I tested it with my 10,000 watt generator running the whole house, and it worked perfectly!"

"When my WGen9500TFc generator arrived, it was in perfect condition and included everything I needed. The 25-foot natural gas hose with quick connections was a great surprise. My backup generator is connected to the main panel, powering all my lights and appliances, including a 5-ton air conditioner. It’s a great generator!"

"The unit is solid and well-made with easy wiring instructions. I appreciate the weatherproof receptacle. It offers good value for its quality, but I did find wiring from the back a bit challenging with 6-gauge wires."

"I appreciate the heavy gauge material and found the installation straightforward. The angled connector plate prevents the cable from sticking out awkwardly. I mounted mine in the garage, allowing the generator to stay outside when needed."

"I chose this box because the cord goes down instead of sticking straight out, reducing strain on the connection. The box feels heavy duty, similar to commercial options. Although it seems a bit oversized, I value the good quality receptacle and secure wire connections."

"This unit is sturdy and well-made. It offers strain relief and protection for my 30 amp generator plug. I also like that it has a lid that keeps the connector dry during rainstorms, and the cable angle helps prevent tripping."

"After extensive research, I chose this inlet box because it met all my requirements: good quality receptacle with copper contacts, ample space for wiring, a downward-facing receptacle, and a reasonable price. It arrived quickly, and the installation was straightforward, especially since I could remove the receptacle plate to access the screws easily. I'm very satisfied with this purchase and would buy it again."

"I did extensive research prior to buying this generator inlet box, and I'm impressed with its quality and sturdiness. The installation was a breeze. For those who mentioned the lack of a 3/4" PVC fitting punch-out, they simply need to follow the proper steps. I found there was plenty of room for my #6 gauge wires, and I appreciate the bottom inlet design, which minimizes stress on the box."

"I opted for this model mainly because of the downward plug. After testing it out, I'm pleased to report that it works perfectly. This is definitely one of the best 50A inlet boxes I've come across, and I've installed many of them."

"I used this to feed power from an auxiliary generator into my house. It’s of robust quality and very easy to work with."

"I installed this product because our power company has sensitive shut downs, leading to frequent outages. It was a simple and safe installation with lockouts, turning the generator connection into a plug and play option. I’m really pleased with its construction."

"This box works great! The indicating light lets me know when it’s hot. The installation required a bit of force to push the cover on, but overall it fits well. I mounted it on drywall, which made it easier compared to a brick surface."

"I found this product to be cheaper and better than other brands I've tried. The ground wires are securely attached, and the plugs for the unused knockout holes are of superior quality. It functions perfectly and is easy to connect and use."

"This product was well worth the investment. The look, feel, and functionality are exactly what I was looking for. It doesn't feel cheap at all, and it performs effectively. It also looks fantastic on the side of my house."

"I was quite impressed with the NEMA 3R enclosure and how easy it is to use. All necessary electrical components were included, and they seem to be of good quality. I’ve also purchased their L5-30 box assembly, which encouraged me to buy this unit. I would definitely consider purchasing it again."

"I found this to be the only American-made generator plug available on Amazon. I had a bit of trouble with the wiring, as the directions didn’t match the plug. The W terminal is the neutral, which wasn't obvious at first, but the quality of this Leviton plug is exceptional compared to others."

"This box performs exactly as intended. My only issue is with the outlet cover; it really should have a built-in locking mechanism for extra security when plugging in. Aside from that, it's been great!"

"I needed to upgrade the connection box for my new home. This option had the best price along with all the necessary features. I feel confident that if the power goes out, I can easily connect my generator and have all the power I need without hassle."

"As a contractor, I was hired to connect this box to a 50 amp disconnect and upgrade the wiring for a generator. The price and quality of the cord and box are outstanding. However, I had a tough time with the knockouts; I ended up drilling multiple relief holes and using a jigsaw to create the hole for a 2” steel nipple. It cost me 1.5 hours, which was frustrating. Everything else worked fine!"

"I was pleasantly surprised by the heavy gauge metal and clever engineering of this product. Just ensure you have the correct pinout, and you'll be satisfied with its performance. Highly recommend!"

"This product was fantastic for connecting our gas generator to the house! As noted, the cut-outs aren't really cut-outs, so I had to make my own. I appreciate the exterior light indicating on/off status and the thick, sturdy, weatherproof cord. I would definitely recommend this!"

"I found this product to be high-quality and simple to install. Its durability is evident, and it has been very easy to use."

"Using this cable with my F150 Powerboost has been a great experience. The inlet feels well-made and the connections are secure. Even at 20A for hours, everything stays cool."

"After a recent power outage, I decided to prepare my home for a generator. This 15-foot, 30-amp Generator Extension Cord is just perfect for keeping the generator at a safe distance from the house. The product matches our needs excellently."

“I installed this as an outside plug for my generator, and it works great with its solid weather-proof design.”

“I really appreciate how easy it was to set up. The cover seems engineered to keep water out, and I felt secure using it during Hurricane Milton.”

“As an electrician, I find this box to be excellent. I prefer to mount it about 5' high, which makes it easier to insert the bottom-mounted plug.”

"I found the quality to be excellent and installation was very easy for my electrician. It works great with my generator setup."

"I used this box with an interlock kit to safely connect my solar generator to my critical loads subpanel. The pre-drilled knockouts were plugged with rubber covers, making the installation even easier. Plus, the lamp lights up when energized, so I always know when it's powered. Highly recommend!"

"This inlet box is well made and easy to install, but I was surprised to find that there are no actual knockouts. Instead, there are embossed stampings where the connections could go. I had to bore out holes, which was a bit inconvenient. Nevertheless, the device works perfectly and is very sturdy."