Greenlee 28155 Round Conduit Die 1/2 Inch Knockout Punch

Product Description

The GREENLEE 28155 is a round conduit die designed for use with Greenlee Slug-Splitter Self-Centering Knockout Punch units. It produces clean, accurate holes for 1/2-inch conduit installations, with a punch hole diameter of 22.5 millimeters (7/8 inch). The die is a replacement or spare component for electricians and contractors who rely on Greenlee knockout punch systems for sheet metal enclosures, panel boxes, and electrical boxes. Its round profile ensures consistent results across standard conduit entry applications on ferrous and non-ferrous sheet materials.

This die is suited for commercial and residential electrical work where conduit entry points are punched into enclosures, junction boxes, or panel boards. It is used by licensed electricians and electrical contractors performing conduit installation and termination work. The 1/2-inch conduit size makes it one of the most common sizes in residential branch circuit and light commercial conduit runs.

Key Features

• Round die profile for clean, burr-minimized conduit knockouts
• Sized for 1/2-inch conduit with a 22.5-millimeter punch hole diameter
• Compatible with Greenlee Slug-Splitter Self-Centering Knockout Punch units
• Single-piece component sold individually

Compatibility

Designed for use with the Greenlee Slug-Splitter Self-Centering Knockout Punch unit. Compatible conduit size is 1/2 inch. Verify punch unit model compatibility with Greenlee documentation before ordering.

Installation Notes

Installation is performed by licensed electricians working on electrical enclosures, panel boxes, or junction boxes. Power down all circuits feeding any enclosure before punching or modifying it. Ensure the knockout punch unit is properly centered and secured before applying force. Follow NEC guidelines for conduit fill and entry point requirements applicable to the installation.