Conduit Fill Useful Remaining

Conduit Fill Useful Remaining Space

Area of a Square

Area of a Rectangle

Area of a Circle

Area of an Octagon

Volume of a Cube

Volume of a Box

Volume of a Cylinder

Conduit Fill Look Ups

Conduit Fill

Conduit Fill Percentage

Conduit Fill Useful Space Remaining

Nipple Fill

Nipple Fill Look Ups

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The calculation to find the unused percent is straight forward. 

First add up all the contained conductors in square inches.

Next, determine the percentage of space that was used by dividing the used area by the total area.

Lastly, subtract this percent of used area from the useful area in percent.

 Note that the useful area could be 40% for a raceway of no longer than 24 inches. The useful area of a nipple is 60% when the raceway is 24 inches or less in length.


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