{"product_id":"southwire-cpb400-plastic-conduit-bushing-4-inch","title":"Southwire CPB400 Plastic Conduit Bushing 4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWIRE CPB400 is a 4-inch plastic conduit bushing designed to protect wire and cable insulation from abrasion where conduit terminates at an enclosure, panel, or junction box. The bushing threads onto the end of the conduit and provides a smooth, rounded interior lip that prevents conductor jackets from being damaged during pull-through. Electricians install this fitting as a standard step in any conduit termination that does not use a threaded hub with an integral throat. The lightweight plastic construction resists corrosion and makes handling simple on the job.\u003c\/p\u003e\n\u003cp\u003eThis bushing is suited for use in residential and light commercial electrical installations wherever 4-inch rigid metal conduit or intermediate metal conduit terminates at a box or enclosure. It is commonly installed in service-entrance work, feeder runs, and branch-circuit conduit systems. This part is also referenced as Topaz 840 and Madison CPB-400, making it a widely cross-referenced bushing used across multiple distribution channels.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch trade size fits standard 4-inch conduit terminations\u003c\/li\u003e\n  \u003cli\u003ePlastic construction resists corrosion in damp and dry locations\u003c\/li\u003e\n  \u003cli\u003eSmooth interior lip protects conductor insulation during wire pull\u003c\/li\u003e\n  \u003cli\u003eThreads directly onto conduit end for quick installation\u003c\/li\u003e\n  \u003cli\u003eCross-referenced with Topaz 840 and Madison CPB-400\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with 4-inch rigid metal conduit and intermediate metal conduit terminations. Also referenced as Topaz 840 and Madison CPB-400.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the circuit and verify power is off before working inside any enclosure. Thread the bushing onto the conduit end by hand until snug before pulling conductors. Inspect the bushing throat for cracks or deformation before use, and replace if damaged.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrade Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1175 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: One Year Limited\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: China\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SOUTHWIRE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CPB400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWIRE","offers":[{"title":"Default Title","offer_id":51346250891570,"sku":"CPB400","price":24.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310552898.png?v=1782075200","url":"https:\/\/voomisupply.com\/products\/southwire-cpb400-plastic-conduit-bushing-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}