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The VALUE COLLECTION BD-17497 is a steel reducing washer designed to transition between two different conduit knockout sizes within an electrical enclosure. It seats in a larger knockout opening and reduces it to accept a smaller conduit fitting, creating a clean, secure fit without the need for additional adapters. This type of washer is a standard component in conduit rough-in work and enclosure modifications. Each package contains 50 washers, making it practical for job-site use where multiple transitions may be required in a single panel or enclosure installation.
This reducing washer is suited for use in residential, commercial, and light industrial electrical installations wherever conduit enters a box, panel, or enclosure through a knockout that does not match the conduit size being run. It is compatible with rigid conduit, intermediate metal conduit (IMC), and thinwall conduit (EMT) applications. Electricians use this washer when running 3/4-inch conduit through a 1-1/2-inch knockout, eliminating the need to source a larger fitting or modify the enclosure.
Designed for use with rigid conduit, intermediate metal conduit (IMC), and thinwall conduit (EMT) at a conduit size transition of 1-1/2 inches to 3/4 inches.
Installation is performed by licensed electricians in accordance with applicable NEC requirements for conduit and enclosure work. De-energize and lock out the panel or enclosure before beginning any knockout modification or fitting installation. The reducing washer is seated into the larger knockout before the conduit connector or fitting is inserted and secured. Do not force the washer into an undersized or damaged knockout, as this may compromise the integrity of the enclosure seal.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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