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What is a reducing washer donut?

Updated: 12/10/2022
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12y ago

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A reducing washer is used when the wrong size knockout gets removed. If you have a 1/2 in connector that you have to mount into a distribution panel and all there is left is a 3/4 inch hole that has already been punched out, you would use a reducing washer to reduce the 3/4" KO hole down to a 1/2" KO hole. You would put one washer on the outside of the panel hole and the other one on the inside of the over sized panel hole. Install the connector through both of the washers and tighten the connector's lock nut on the inside of the panel. These washers are not to be confused with reducing bushing that are used to reduce a hub size down to a smaller size.

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12y ago
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Q: What is a reducing washer donut?
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