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The ROBROY KNRA-1 is a right angle type conduit clamp designed for securing 1-inch trade size rigid metal conduit (RMC) in electrical installations. Constructed from malleable iron with a hot dip galvanized finish, this clamp delivers corrosion resistance suitable for exposed and industrial environments. The right angle configuration positions conduit perpendicular to the mounting surface, making it a standard choice for routing runs along walls, beams, and structural members. Licensed electricians and electrical contractors install this fitting as part of compliant RMC support systems in commercial and industrial applications.
This clamp is suited for use with 1-inch trade size heavywall rigid metal conduit in both new construction and retrofit electrical projects. Its hot dip galvanized finish makes it appropriate for locations subject to moisture exposure, including utility rooms, mechanical spaces, and outdoor-rated enclosures where conduit support hardware must resist rust and oxidation over the service life of the installation. It is sold and priced individually and packaged 25 units per carton for jobsite convenience.
Designed for use with 1-inch trade size rigid metal conduit (heavywall) per ANSI C80.1. Verify conduit trade size and clamp type before installation.
Installation is performed by licensed electricians in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize all circuits in the work area before mounting or adjusting conduit support hardware. Use appropriate anchors or fasteners rated for the mounting surface type — concrete, steel, or wood — to ensure secure conduit support at required spacing intervals. Do not overtighten or deform the clamp body, as malleable iron fittings are not designed to be field-modified.
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