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The Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box is a watertight electrical inlet box designed to be located outdoors where the generator is running in order to prevent dangerous carbon monoxide fumes from entering your house or other cherished space. This inlet box should be safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. It was also designed to be wired directly to the transfer switch or panel by using one of the four included combination 1/2-inch and 3/4-inch knockouts (one on each side, bottom and back). The exclusive, patented make provides generous wiring space and facilitates rough-in. The face of the box is removable for easy placement and wiring and, finally, it was constructed of steel with rugged, anti-corrosive, powder-coated paint and has a spring-loaded inlet cap to prevent moisture front entering the front-mounted connector inlet when not in use. Since 1909, Reliance Controls Corporation has contributed more innovations than 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 after over a century of innovation, Reliance Controls Corporation has built an enviable reputation for high quality, superior engineering and exceptional customer service.
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The Reliance Controls 50 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 works with generators working at 12,500 watts. 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. The face of the box is removable for easy placement and wiring. It is cUL 1008 listed and covered by a 5-year warranty.
Js Homer
2025-08-26 11:25:28
The WGen9500TFc generator arrived in perfect condition with everything I needed to start it. Surprisingly, it included a 25-foot natural gas hose with appropriate quick connections. The backup generator is connected to the main electrical panel through a 50A inlet box, powering all lights and appliances, including a 5-ton air conditioner with a soft starter (of course, I would need to limit the number of devices powered simultaneously). Great generator!
2007fjcruiser
2025-08-15 17:58:47
Very high quality and easy to install box. Feels like it will keep the rain out nicely. Connectors all felt strong. Tested after installing with a 10000 watt generator with the whole house running. Worked perfectly.
Michael Chamberlin
2025-07-25 16:46:48
Ease of installation and wire connection
Jack
2025-07-21 15:07:56
Installed with 6/3 which is tight if you try to fold it in. Plan to caulk around top back and sides to keep water out from behind it. Would have preferred hole instead of slot for cover set screw. Just ran 9500w generator on it for 30+ hours with no issues.
_Cust0mer
2025-06-06 15:31:41
This inlet box is very good quality but could use a few design changes. The connectors are designed for 8 AWG so you cannot connect 6 AWG (which is required for 50 amp) without using wire pin connectors and bending them 90 degrees. Next, the box is a bit too small for 6 AWG so make sure you use the bottom knock out. Otherwise, works well and gets the job done. Docking 1 star because it is not really well designed for 6 AWG.
Wei
2025-05-14 14:27:32
it's easy to install and nice quality.
bradley knudson
2025-05-12 15:13:19
Well-made great instructions included. Easy to wire. Great weatherproof receptacle. Good value for the quality of the product.
Rafael Perez
2025-05-06 13:21:29
got my electric to set it up.
Victor cooper
2025-02-26 12:20:18
You tube folk recommended going for the copper cone toons. Only 50 amp one on Amazon
Roger Bagnarol
2025-02-13 21:22:49
Well built very sturdy
Oliver
2025-02-08 15:18:29
Solide et bonne connection avec le connecteur mâle de la mm marque.
Luc Richardson
2025-01-28 10:26:25
Good product. Wiring from the back is a little difficult when using 6-gauge wires.
Uwe H.
2025-01-05 11:00:50
Overall this is a good sturdy unit. My only negative would be that the wiring space inside the box could be a bit bigger. It's a bit crowded for 3 #6 wires plus ground
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