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The APPLETON 4300ST is a 3-inch insulated stainless steel EMT connector used to terminate electrical metallic tubing in conduit installations. The insulated throat protects conductors from abrasion at the point of entry, while the stainless steel construction provides corrosion resistance in demanding environments. This fitting is installed by licensed electricians in commercial, industrial, and institutional projects where code-compliant EMT terminations are required at enclosures, panels, and junction boxes.
This connector is suited for use in wet, damp, or corrosive-rated locations where standard steel fittings would be inadequate. The 3-inch trade size accommodates large-diameter EMT runs typical of feeder and distribution circuits in commercial and industrial settings. It is commonly specified in food processing, wastewater, marine, and coastal construction where stainless steel fittings are required by specification or local code.
Designed as an OEM-style fitting for use with 3-inch electrical metallic tubing in standard EMT 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 and lock out the panel before making terminations. Verify the knockout size matches the 3-inch trade size before installation. Do not overtighten the locknut, as this can distort the fitting or damage the enclosure wall.
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