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Reliance Controls Corporation PB30 30 Amp NEMA 3R Power Inlet Box for Generators Up to 8,000 Running Watts

4.7 out of 5 stars 328 customer reviews
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Price: $49.99 & FREE Shipping. Details
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  • This unit is cUL listed
  • Maximum generator running watts: 8,000
  • Maximum generator input: 30A@125/250 VAC
  • Cabinet type: Outdoor, NEMA 3R
  • 5-year warranty
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$49.99 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Reliance Controls Corporation PB30 30 Amp NEMA 3R Power Inlet Box for Generators Up to 8,000 Running Watts
  • +
  • Reliance Controls Corporation PC3020 30 Amp 20 foot Generator Power Cord for Generators Up to 8,000 Running Watts
Total price: $118.80
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Product Description

Size: EA

Product Description

The Reliance Controls PB30 NEMA 3R Power Inlet Box is an outdoor/watertight electrical inlet for a 30 Amp L14-30 generator cord. 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. It is designed to be wired directly to the transfer switch or panel by using one of the four combination 1/2-inch and 3/4-inch knockouts (one on each side, bottom and back). The exclusive patented design provides generous wiring space and facilitates rough-in. The face of the box is removable for easy placement and wiring. It is constructed of steel with rugged, anti-corrosive powder-coat paint and has a spring-loaded inlet cap to prevent moisture front entering the connector inlet when not in use. Since 1909, Reliance Controls Corporation has contributed more innovations that any other single manufacturer and has been awarded over 85 patents on manual transfer switches, time switches and accessories. Reliance Controls Corporation specializes in the manufacturing of a wide variety of electrical products. The primary product line consists of heavy duty time clocks and controls, generator accessories, transfer switches and transfer panels for portable generators and inverters. And after over a century of innovation, Reliance Controls Corporation has built an enviable reputation for high quality, superior engineering and exceptional customer service.

Amazon.com

The Reliance Controls 30 Amp power inlet box is designed for outdoor use and can be hardwired directly to Reliance Controls transfer switches or panels, eliminating need for cords running through windows or doors. This rain-tight, rust-proof unit includes an NEMA L14-30P inlet plug, six knockout holes, and push-in wire connections. Using one of the four combination 1/2-inch and 3/4-inch knockouts (one on each side, bottom and back), the power inlet box can be wired directly to the transfer switch or panel. The exclusive patented design provides generous wiring space and facilitates rough-in. The face of the box is removable for easy placement and wiring. It is cUL 1008 listed and covered by a 5-year warranty.

Product Information

Size:EA

Technical Details

Part Number PB30
Item Weight 1.9 pounds
Product Dimensions 4 x 6 x 8 inches
Item model number PB30
Size EA
Color Gray
Material - Select -
Power Source corded-electric
Item Package Quantity 1
Warranty Description 5 Years

Additional Information

ASIN B000BQT47S
Customer Reviews
4.7 out of 5 stars 328 customer reviews

4.7 out of 5 stars
Best Sellers Rank #2,844 in Home Improvements (See top 100)
#49 in Patio, Lawn & Garden > Generators & Portable Power
#356 in Patio, Lawn & Garden > Mowers & Outdoor Power Tools
#420 in Home Improvement > Electrical
Shipping Weight 1.9 pounds (View shipping rates and policies)
Date First Available April 7, 2006

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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From the Manufacturer


Important Information

Safety Warning

If this product is not used with an approved transfer switch, it is not allowed by the NEC to supply power from a portable generator to a premises wiring system because of serious safety concerns.


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: EA Verified Purchase
I bought this to go with my 7Kw generator and Reliance Controls 30-Amp Transfer Switch Q310C. With a 50 foot run between them I chose to run an 8/3 cable with ground. If you mount this plug against a wall or post as I did, the 3/4" hole is blocked, leaving just the 1/2" one which made getting the four #8 wires inside a challenge. I WAS happy that the connections to the plug accepted this size wire as well and not just 10AWG.

Now when the power goes off (a frequent occurrence in my area thanks to AEP), I crank up the generator, run a cord from it to the plug outside my house, flip the transfer switches and the important circuits are running - water pump, refrigerator, freezer, furnace blower, TVs, computers, most lights and of course the wife's coffee maker and toaster oven while the generator runs at barely 50% load. To power the air conditioner would require a MUCH bigger generator so we just turn on fans or run the furnace blower to move the air.

One unsolicited comment... For the sake of your local utility worker, PLEASE use a transfer switch be it a smaller one such as the one I purchased or a whole house version. I get really bothered when people write on here how they connect to a receptacle and back-feed their home. That's fine until the day you forget to turn off the main and electrocute the guy trying to get your power back on. I know.... YOU would never forget. Don't be cheap - do it right and you never have to worry.
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Size: EA Verified Purchase
Summary - This is a well built generator inlet box that is easy to install and use.

Background - I purchased this box to go with gas powered generator (Briggs & Stratton Elite Series 30471 10,000 Watt Briggs & Stratton 2100 Series OHV Gas Powered Portable Generator With Wheel Kit), and a 30 AMP, 7500W generator cable (Reliance Controls PC3040 40-Feet 30-Amp L14-30 Generator Power Cord for Up to 7500-Watt Generators). I decided on 8/3 Romex to connect between the inlet box and the breaker panel. At the breaker panel, I decided on an Interlock Kit (available at my local super-box hardware store) rather than a manual transfer switch such as Reliance Controls 31410CRK Pro/Tran 10-Circuit 30 Amp Generator Transfer Switch Kit With Transfer Switch, 10-Foot Power Cord, And Power Inlet Box For Up To 7,500-Watt Generators. This allows me have more control over my panel and prevents any back-feed down the power lines. To let everyone know the power was back on, I also purchased a nifty little box that tells you power has returned, Reliance Controls THP108 PowerBack Utility Power Return Alert Home Monitoring Products, and a Baby Monitor (See my review of the power return alarm for that story!),

Packaging - The packaging was adequate and protected the device in transit.
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Size: EA
The picture is actually of a L14-20 connector box (with the locking lug pointing away from the center of the lug circle). The L14-30 standard actually has the locking lug point toward the center.

If you try to match the lug patterns to your cable - this box won't work with the 20 amp generator cables. In fact, if you blow up the picture, you can see that the picture is actually of a 20amp rated inlet box.
3 Comments 32 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: EA Verified Purchase
I'll preface this by saying I am a licensed electrician and have installed close to 50 of these boxes over the past couple years. These boxes are nema 3r and are of good quality I have yet to have any of them fail. This inlet fits the 30amp 220/11v twist lock cord commonly found at the Home Depot. Couple this unit with a transfer switch and you have a very safe and reliable way of feeding your home with a generator. This is the exact same unit most electrical supply houses sell.

My only complaint of this box is you can't feed it with conduit from the top as the way the cover comes off both the front and top come off as one piece. You HAVE to do your wire entries either from the side or bottom. This is not a deal killer but the installs look much better with the outlet below the panels rather than off to the side.
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Size: EA Verified Purchase
very sturdy box, easy to mount, and the plug will accept 8 gauge wire if you are so inclined (as I was).
3 Comments 12 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: EA Verified Purchase
i used this product for a portable generator connection mounted on the house to feed the circuit panel , using a lock out tag out system instead of a transfer switch because i wanted to energize to whole circuit box instead of just a select few breakers . i'm running an 8k watt 10k peak output generator with 10/4 gauge wire , and this product meet my needs and expectations . . . heavy duty and good quality product that i would recommend for use !
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Size: EA Verified Purchase
I bought this a long time ago.... just looking at stuff that I never replied on. I live in NJ and had my generator running the whole house through this for five days during the "Super Storm Sandy" If you are going to hook your home up to use a generator for back up power, YOU MUST BUY THIS!!!!! Yea I wrote the same thing for the cord... you need both of these items. I cut this box in where my central air unit is outside. I have a breaker box outside and it is a 220v connection... when power goes out, I pull the generator to the front of my shed, put a padlocked chain on it to the shed, and run the cord over to this box that is mounted on the side of the house. I can test to see if the power is back on by shutting off the AC breaker INSIDE the house and turning the main back on. If nothing then the main goes back off and I turn the AC breaker back on and the generator back-feeds through that line. I am glad I did all this BEFORE we had the string of storms last summer.
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