Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray

American made, God bless America.

Works great as intended

This brand came recommended by my electrician for generator inlet box. I went with 50 amp instead of 30 to future proof the generator setup. Installation for a panel with interlock kit went through w/o any issues.

Easily installed, sufficient room for 6 gauge conductors (it will accommodate 4 gauge). Not sure about previously noted problems with wire size and connecting the generator cord. This was one of the easiest 6 gauge installs and my generator cord inserts and locks with no issues. Maybe they were using a cheap import cord?

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.

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.

Well built and easy to install. I used 6/3 copper wire and had no issues fitting the wires in the box.

Bought this box to replace a 30 amp inlet box that was mounted to the house when we purchased it in early 2021. This box was very easy to install on the brick exterior of the house. I added a thick rubber washer between the box and the brick at the top screw to allow the top to easily slide down over the box. I also used #6 wire and had no problem with the thicker wire. I followed the advice of another rater and made a 45 degree bend in the wire about an inch from the end, before removing the insulation. Once the insulation is removed the wire fits very nicely into the hole and lies parallel to the plane of the back of the inlet receptacle and the box. Completing the assembly was not that difficult after the wires were securely attached to receptacle. Also, I only left about 6 inches of wire in the box, just enough to work with. An electrician quoted me $900+ to install the box and connect to the transfer switch. Time to head down to Lowe’s to buy the generator.