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Reliance Controls

Model # PB30

Internet # 202213702

Store SKU # 725625

30 Amp Power Inlet Box

This item has been discontinued.
The Home Depot no longer carries this specific product.

$53.98 /each




Model # PB30

Internet # 202213702

Store SKU # 725625

The Reliance Controls 30 Amp Power Inlet Box is designed for outdoor use and can be hardwired directly to a manual transfer switch or transfer panel, eliminating the need for cords running through windows or doors. This raintight unit includes a flanged inlet plug, an inlet cover and 4 combination knockouts.

  • Connects a generator cord to a manual transfer switch or transfer panel
  • Raintight metal cover ideal for outdoor mounting
  • NEMA L14-30P rated flanged inlet plug
  • 30 Amp s, 125/250 VAC, 7,500 watts
  • Generous wiring space facilitates rough-in
  • UL listed
  • Face of the box is removable for fast installation
  • 4 combination 1/2 in. and 3/4 in. knockouts

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Electrical Product Type 
Power Inlet Box 
Maximum Amperage (amps) 
Product Weight (lb.) 
2 lb 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 
Manufacturer Warranty 
5 years 


Rated 4.7 out of 5 by 55 reviewers.
Rated 5.0 out of 5.0 by Great Generator Power Inlet Box for a Mobile Home It was a bit daunting for a basic DIY guy like me, but I got everything I needed to connect my emergency power generator to my load center (aka fuse box), and this Power Inlet Box from Reliance Controls is the centerpiece. It is super solid and high quality, and pretty much immune to rain when closed. I recommend using it with a matching twist-lock L14-30 connector also from Reliance Controls for maximum electrical contact. ( Model # L1430C Internet # 202216503 ) I used 6 gauge wire (I like to over-spec) which was a struggle to rout neatly in the box but the connections are rock-solid. Remember if you are going to connect a generator to your load center you also need a Generator Interlock to be safe and legal. This makes sure you cannot switch on both the generator and the grid feed at the same time. September 16, 2015
Rated 5.0 out of 5.0 by Great product Easy installation. Highly recommend using this product. September 29, 2015
Rated 4.0 out of 5.0 by nice power inlet box Nice compact box. Weatherproof and easy to install. Took a gamble because I did not see a knockout on the back until it arrived. Glad it has this feature. Installed and ready for use! September 8, 2015
Rated 5.0 out of 5.0 by This box is a great inlet for your generator After going through three hurricanes, I decided that I did want a generator to provide power for the refrigerator and the television. We found that you really need the TV to keep track of where gasoline is and when power is likely to be restored and what is in your neighborhood in the way of storms. Without an inlet box like this, you wind up with extension cords either through a window or through a door. In either case, you now have mosquitos. With this box on the outside, and a 2 gang duplex outlet on the inside, I was able to take the 240 volt 2 phase power into the inside of the house where it became 2 120v duplex outlets. My generator only puts out 2 120 volt circuits that are each limited ot 15 volts by circuit breaker if you use the L14-30R outlet that this box enables you to get to the house. I used a heavy duty 10 awg extension cord, also from home depot, from the generator to this box so that there is very little voltage drop getting to the inside extensions to the refrigerator, TV and satellite receiver, Computer, printer, cable modem, fans and lights. This box is a critical item for the storm preparations. June 11, 2011
Rated 5.0 out of 5.0 by Reliance Controls PB30 - Perfect! This inlet box makes it easy to bring generator power inside the house without having to crack a door or window. And it's a much more elegant and safer solution than using multiple lengthy extension cords. This inlet box is perfect for feeding generator power into the house. I drilled a hole through the brick and mounted the PB30 to the outside wall over the hole, then caulked all edges. I fed 10GA 10/4 electrical wire through the hole into the crawlspace and then into the basement ceiling, where the power is split from a junction box into two 120v/20A duplex outlets. I located one outlet beside my 2.2KVA extended run length online UPS and the other outlet beside the secondary fridge. Once the generator is running at speed and connected, I manually move the UPS and fridge power plugs from the utility outlets to the generator outlets. I have a relatively small 3000W/120v propane generator (ETQ PG30P11). It doesn't provide 240V, so I made an adapter to feed both "hot" lines of the PB30 with the generator's 120v output. Therefore I have no load balancing issues with the two duplex outlets when using this generator. And if I ever upgrade to a larger 7500W/240V generator the same PB30 inlet box can be used. January 29, 2015
Rated 4.0 out of 5.0 by Great Product Bought this to complete my home generator setup. Mounted easily to outside wall to run cable to breaker panel in basement. Quality construction. A little pricey but it's hard to fine a NEMA male twist-lock plug and box for DIY'rs. Best value was Home Depot. Worth the price to do the job the right way. Purchased online from Home Depot, fast delivery. Very satisfied with product and service. November 17, 2013
Rated 4.0 out of 5.0 by A good inlet for a power generator The power inlet was easy to assemble. I used # 10 wire to connect up to a double pull 30 amp breaker. It's better to use thinner wire such as #12 to make it easier to make all the connections. This box can adequately hold a connecting 30 amp 10/4 power cord in place. A better method would be to use a twist lock adapter to ensure the power cord stays well connected to inlet box. August 19, 2014
Rated 5.0 out of 5.0 by commercial grade This inlet box is exactly what I needed for my generator. Good quality and easy t install. December 19, 2011
  • 2015-10-08T08:53:19.066-05:00
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