Abb WA-151 Reducing Washer 1-1/2 X 1/2 in Rigid Imc Conduit

Product Description

The ABB INSTALLATION PRODUCTS WA-151 is a steel reducing washer designed to adapt a 1-1/2 inch knockout to accept 1/2 inch rigid or IMC conduit. Stamped from steel with a zinc-plated finish, this washer provides corrosion resistance suitable for standard indoor and light commercial electrical installations. The zinc plating helps guard against oxidation in typical enclosure environments. It measures 7/8 inch inner diameter by 2-5/8 inch outer diameter, allowing it to seat cleanly in the knockout and close the gap around a smaller conduit entry. Electricians use this washer to achieve a professional, gap-free fit in panels, boxes, and junction enclosures without improvised solutions.

This reducing washer is suited for use in residential and light commercial electrical work wherever a 1-1/2 inch knockout needs to be stepped down to accommodate 1/2 inch rigid metal conduit or IMC. It fits common panel enclosures, junction boxes, and distribution boards during new construction or retrofit conduit installations. The two-size reduction covers one of the most frequently encountered knockout-to-conduit mismatches in the field.

Key Features

• Adapts 1-1/2 inch knockouts to accept 1/2 inch rigid or IMC conduit
• Stamped steel construction with zinc-plated finish for corrosion resistance
• 7/8 inch inner diameter by 2-5/8 inch outer diameter for a clean, seated fit
• Closes gaps around conduit entries in panels, boxes, and junction enclosures
• Supports code-compliant conduit terminations without field modifications

Compatibility

Designed for use with rigid metal conduit and IMC conduit systems. Fits 1-1/2 inch knockouts in standard electrical enclosures, panels, and junction boxes where a 1/2 inch conduit entry is required.

Installation Notes

Installation is performed by licensed electricians in accordance with NEC requirements for conduit terminations. De-energize all circuits and verify the panel or enclosure is fully powered down before beginning work. Seat the washer flush against the knockout edge before securing the conduit locknut to ensure a tight, gap-free termination. Inspect the washer for damage before installation to maintain a compliant conduit entry.

Technical Specifications

• Size: 1-1/2 x 1/2 inches
• Inner Diameter: 7/8 inches
• Outer Diameter: 2-5/8 inches
• Material: Steel
• Finish: Zinc Plated
• Suitable For Use With: Rigid/IMC Conduits

Standard Information

• Brand: ABB INSTALLATION PRODUCTS
• Manufacturer Part Number: WA-151