Southwire RC400 4 Inch Rigid Conduit Coupling Imc Emt

Product Description

The SOUTHWIRE RC400 is a 4-inch threaded rigid conduit coupling designed to join two threaded rigid conduit or IMC conduit sections end to end. The coupling accepts standard threaded conduit ends and provides a secure, continuous raceway for wire and cable protection. Its threaded design also allows use with chase nipples and threaded connectors to bond conduit runs to junction boxes and electrical enclosures. Licensed electricians and electrical contractors install this coupling as part of above-ground and in-wall rigid conduit systems in commercial and industrial applications.

This coupling is suited for use in commercial, industrial, and heavy residential electrical installations where rigid metal conduit or IMC is specified. It connects directly to 4-inch threaded conduit ends and can serve as a transition component when used alongside appropriate threaded connectors to tie flexible metal conduit or liquid-tight conduit into a rigid conduit system. The standard threaded design ensures compatibility with all common threaded fittings used in these conduit systems.

Key Features

• 4-inch threaded interior accepts standard rigid conduit and IMC conduit ends
• Joins two threaded rigid or IMC conduit sections end to end
• Compatible with chase nipples and threaded connectors for box or enclosure connections
• Works with threaded connectors to transition from flexible metal conduit or liquid-tight conduit into rigid conduit runs
• Standard threaded design fits all common threaded conduit fittings

Compatibility

Designed as an OEM-style replacement fitting for 4-inch threaded rigid metal conduit and IMC conduit systems. Compatible with standard threaded connectors, chase nipples, and related fittings used in rigid conduit installations.

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 affected raceway before beginning conduit work. Hand-tighten the coupling onto both conduit ends and use an appropriate conduit wrench to achieve a secure mechanical connection. Do not overtighten, as this may damage conduit threads.

Technical Specifications

• Trade Size: 4 inches
• Thread Type: Standard threaded (rigid conduit thread)
• Compatible Conduit Types: Rigid Metal Conduit, IMC, Flexible Metal Conduit (with threaded connectors), Liquid-Tight Conduit (with threaded connectors)

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: RC400