How to open the round hole in the electrical distribution box
A hole saw attached to a standard drill provides a quick and precise method for cutting circular openings. For non-circular or custom openings, a metal nibbler or a rotary tool with a specialized cutting bit can be used. Electrical knockouts are the small round pieces you see on the sides of an electrical box or panel. They provide a safe and secure place to house electrical wires and fixtures, and they also help to protect against electrical shock. How do I properly open these cable holes? Got these cable holes in a metal Tripp Lite rack I acquired but they're all welded shut, how does one open these? Hammer and lots of banging? They look like electrical panel knockouts.
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