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The SOUTHWIRE N-400600 is a galvanized steel conduit nipple designed to extend a run of threaded rigid or IMC conduit. At 4 inches trade size and 6 inches in length, it provides a short, rigid coupling segment between conduit sections or fittings. The galvanized steel construction delivers low conductivity, strong corrosion resistance, and dependable mechanical integrity in demanding installation environments. This nipple is UL Listed, making it suitable for use in code-compliant electrical installations. Electricians and conduit installers rely on this type of fitting to maintain continuous grounding paths and system integrity through transitions, junction boxes, and panel knockouts.
This conduit nipple is used in both commercial and residential electrical installations wherever threaded rigid metal conduit or IMC conduit is specified. Common applications include service entrances, panel connections, junction box extensions, and conduit runs through walls or enclosures that require a short threaded section. It is appropriate for interior and exterior use where galvanized steel corrosion protection meets project requirements.
Designed as an OEM-style replacement and standard fitting for use with 4-inch trade size threaded rigid metal conduit and IMC conduit systems.
Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize all circuits before working on connected conduit or enclosures. Use appropriate thread-sealing compound or conduit wrench when making up threaded connections to ensure a secure, continuous ground path. Do not over-tighten fittings in a way that damages threads or deforms the conduit wall.
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