Jebediah Novak

Ever find yourself in need of a bigger sized knockout on an existing knockout but find yourself without a knockout punch? Jebediah Novak from Local 405 out of Cedar Rapids, Iowa City has the solution!

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Transcript – How to Increase the Size of an Existing Knockout

Hi, my name is Jebediah Novak, I’m a third generation wireman with local 405, Cedar Rapids, Iowa City. I’m an instructor with the Cedar Rapids Electrical JATC and today I have job tip to help you.

Where we have a pre-existing knockout in an enclosure and we need to increase the size of the knockout to accommodate for a larger sized conduit, however we don’t have the ideal tool, which would be a knockout punch. Instead, we are going to have to use a hole saw.

What we can do is lay out where we want our new hole to go, get a piece of scrap 2×4 and pre-drill a hole using your hole saw to fit the size conduit that we are going with. Then, lock the backside with a piece of wood, that gives out pilot bit something to go into. Then we will line up our template. You may want to put a couple lines in there to keep an eye on where you are at. Grab a clamp and clamp the piece of wood into position. Now my 2×4 will act as a guide to allow me to drill my knockout. Now, we are ready to accommodate our two-inch conduit.

Hopefully this job tip will help you on the job site and make your next installation a little easier.

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Kenny Cooper

IBEW International President Kenny Cooper has been working with the IBEW Hour Power team since he was appointed International President in 2023. President Cooper creates short videos entitled “President’s Message” to bring important announcements and inspirational messages right to your computer screen.

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