Reliance Controls Corporation PB20 20-Amp NEMA 3R Power Inlet Box User Manual

Introduction

The Reliance Controls PB20 20-Amp NEMA 3R Power Inlet Box is designed to provide a safe and convenient outdoor connection point for portable generators. This unit allows you to hardwire your generator directly to a Reliance Controls transfer switch or panel, eliminating the need to run power cords through windows or doors. Constructed with durable, rain-tight, and rust-proof zinc-plated steel, the PB20 ensures reliable performance in various outdoor conditions. It features an NEMA L14-20P inlet plug, multiple knockout holes for flexible wiring, and push-in wire connections for ease of installation. The removable faceplate further simplifies the wiring process.

Safety Information

WARNING: Electrical shock hazard. Installation must be performed by a qualified electrician in accordance with all local and national electrical codes. Failure to follow these instructions may result in serious injury or death.

• Always disconnect power at the source before installing or servicing the power inlet box.
• Ensure the generator is turned off and disconnected before connecting or disconnecting the power cord from the inlet box.
• This power inlet box is for power inlet only, not for use as an outlet.
• Do not operate the generator in an enclosed area. Ensure adequate ventilation to prevent carbon monoxide poisoning.
• Verify that the generator's output matches the power inlet box's rating (20-Amp, 125/250VAC).
• Use only approved and properly rated generator cords.

Package Contents

Please verify that all components are present before beginning installation:

• Reliance Controls PB20 Power Inlet Box
• Mounting Hardware (screws, anchors)
• Installation Instructions (this manual)

Specifications

Setup and Installation

Note: Installation should only be performed by a qualified electrician.

1. Choose a Location: Select an outdoor location near your transfer switch or panel that is easily accessible for generator connection. Ensure the location is clear of obstructions and allows for proper ventilation.
   

   Image: The Reliance Controls PB20 Power Inlet Box, shown with its protective cover open, revealing the NEMA L14-20P inlet plug. This view highlights the robust construction and the design for outdoor use.

2. Mount the Box: Securely mount the power inlet box to a sturdy surface using appropriate mounting hardware. The NEMA 3R enclosure is designed for outdoor use, providing protection against rain and sleet.
   

   Image: Front view of the PB20 Power Inlet Box with its protective cover closed, displaying the "RELIANCE" brand name. This illustrates the compact and weather-resistant design when not in use.

3. Wiring Connections:
   • Remove the face of the box for easy access to the wiring terminals.
   • Utilize one of the six knockout holes to bring the conduit or cable into the box.
   • Connect the appropriate gauge wires from your transfer switch or panel to the push-in wire connections inside the inlet box. Ensure all connections are tight and secure.
   

   Image: The PB20 Power Inlet Box with its side panel removed, exposing the interior for wiring. This demonstrates the ease of access for making electrical connections.

   

   Image: A close-up view highlighting the pre-wired built-in grounding feature of the PB20. This ensures proper grounding for safety and simplifies installation by providing easy access to wiring terminals.

4. Replace Faceplate: Once wiring is complete and verified, securely replace the faceplate of the power inlet box.

Operating Instructions

Follow these steps to safely connect and operate your generator with the PB20 Power Inlet Box:

1. Prepare Generator: Ensure your portable generator is turned off and all loads are disconnected.
2. Connect Power Cord: Open the protective cover of the PB20 Power Inlet Box. Connect the appropriate generator power cord (NEMA L14-20) to the inlet plug.
   

   Image: The water-tight design of the PB20 Power Inlet Box, demonstrating its ability to protect the inlet from elements like rain. The spring-loaded cover ensures the unit remains sealed when not in use.

3. Secure Cover: Once the cord is connected, ensure the protective cover is properly closed around the cord to maintain weather resistance. The spring-loaded auto-closing cover helps keep the inlet protected from debris and pests when not in use.
   

   Image: A detailed view of the spring-loaded auto-closing cover mechanism. This feature ensures the inlet is protected from weather, insects, and debris when the generator cord is not connected.

4. Connect to Generator: Connect the other end of the generator power cord to your portable generator.
5. Start Generator: Start your generator according to its manufacturer's instructions.
6. Transfer Power: Operate your transfer switch or panel to safely transfer power from the utility to the generator.
7. Disconnecting: To disconnect, first turn off the generator, then operate the transfer switch to disconnect the generator from the load. Finally, disconnect the power cord from the inlet box and the generator. Close the protective cover on the inlet box.

Maintenance

The Reliance Controls PB20 Power Inlet Box requires minimal maintenance. Regular inspection and cleaning will ensure its longevity and safe operation.

• Periodic Inspection: Annually inspect the inlet box for any signs of physical damage, corrosion, or loose connections. Check the integrity of the protective cover and ensure it closes properly.
• Cleaning: If necessary, clean the exterior of the box with a damp cloth. Do not use abrasive cleaners or solvents. Ensure the inlet plug area is free of dirt, dust, or debris.
• Professional Check: It is recommended to have a qualified electrician inspect your entire generator connection system periodically, especially if you notice any irregularities or issues.

Troubleshooting

If you experience issues with your PB20 Power Inlet Box, consider the following common troubleshooting steps:

• No Power to Transfer Switch:
  • Ensure the generator is running and producing power.
  • Check the generator's circuit breakers.
  • Verify the generator power cord is securely connected to both the inlet box and the generator.
  • Inspect the wiring connections inside the inlet box (only by a qualified electrician).
  • Confirm the transfer switch is correctly operated to the generator position.
• Inlet Box Damage:
  • If the box or plug appears damaged, do not use it. Contact a qualified electrician for replacement.
• Water Intrusion:
  • Ensure the protective cover is always closed when the unit is not in use or when the generator cord is connected.
  • Verify that the mounting surface is flat and the box is securely sealed against it.

For issues not resolved by these steps, consult a qualified electrician or contact Reliance Controls customer support.

Warranty Information

The Reliance Controls Corporation PB20 20-Amp NEMA 3R Power Inlet Box is covered by a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service. For specific warranty terms, conditions, and claim procedures, please refer to the warranty documentation included with your product or visit the official Reliance Controls website.

Customer Support

For technical assistance, replacement parts, or further inquiries regarding your Reliance Controls PB20 Power Inlet Box, please contact Reliance Controls customer support. Contact information can typically be found on the manufacturer's official website or on the product packaging.

Website: www.reliancecontrols.com (Please note: This is a placeholder URL. Refer to your product documentation for the exact support contact details.)