Thomas Betts 8824-TB Conduit Coupling 3 in Rigid Imc

Product Description

The THOMAS BETTS 8824-TB is a malleable iron conduit coupling designed for joining rigid metal conduit and intermediate metal conduit (IMC) runs. It uses a set screw connection method to secure the conduit ends without the need for insulation between the fitting and the conduit. Built from malleable iron, this coupling is rated for concrete-tight applications, making it suitable for installations where the fitting may be encased or in direct contact with concrete. Licensed electricians and electrical contractors install this fitting as part of a complete conduit system in commercial and industrial wiring projects.

This coupling is intended for use with 3-inch trade size rigid metal conduit and IMC in both new construction and retrofit electrical installations. Its concrete-tight rating makes it appropriate for slab, underground, or embedded conduit runs where moisture resistance and mechanical integrity are required. The set screw design allows for straightforward field assembly without specialized tooling beyond a standard screwdriver or hex key.

Key Features

• 3-inch trade size fits standard rigid metal conduit and IMC pipe ends
• Malleable iron construction provides strength and durability in demanding environments
• Set screw connection for secure, tool-accessible field installation
• Concrete-tight rated for embedded and direct-contact conduit applications
• Non-insulated design for standard grounding continuity through the fitting body

Compatibility

Designed as an OEM-style replacement and standard-fit coupling for 3-inch trade size rigid metal conduit and intermediate metal conduit (IMC) systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize all circuits in the conduit run before beginning work on the conduit system. Set screws should be tightened using the appropriate hex key to ensure a secure mechanical and electrical bond between the conduit and fitting. When used in concrete-tight applications, verify that all fittings are properly seated and sealed before encasement.